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Non-data bits used in communications transmission
In data transmission and telecommunication, overhead bits are non-data bits necessary for transmission (usually as part of headers, checksums, and such)
Overhead_bit
Practice in data transfers
with overhead bits. Bit stuffing refers to adding extra bits that do not contain any actual information into the data stream. These stuffed bits are different
Bit_stuffing
Consumption of resources that is indirectly required to achieve a goal
information and data introduces overhead too. The date and time "2011-07-12 07:18:47" can be expressed as Unix time with the 32-bit signed integer 1310447927
Overhead_(computing)
Application-level throughput of a network
information bits delivered by the network to a certain destination per unit of time. The amount of data considered excludes protocol overhead bits as well
Goodput
Information transmission rate expressed in bits per second
transferred bits per second over a communication link, including useful data as well as protocol overhead. In case of serial communications, the gross bit rate
Bit_rate
Line code used in Ethernet technologies
The overhead of 64b/66b encoding is 2 coding bits for every 64 payload bits or 3.125%. This is a considerable improvement on the 25% overhead of the
64b/66b_encoding
may produce a higher line rate or gross bit rate, due to error-correcting codes and other physical layer overhead. It is extremely common for throughput
List_of_interface_bit_rates
Data transmission unit
Application-layer framing Datagram Jumbo frame Multiplex techniques Overhead bit "Data Link Layer (Layer 2)". The TCP/IP Guide. 2005-09-20. Retrieved
Frame_(networking)
Algorithm for encoding data bytes
Consistent Overhead Byte Stuffing (COBS) is an algorithm for encoding data bytes that results in efficient, reliable, unambiguous packet framing regardless
Consistent Overhead Byte Stuffing
Consistent_Overhead_Byte_Stuffing
Computer expansion bus standard
expressed in transfers per second instead of bits per second because the number of transfers includes the overhead bits, which do not provide additional throughput;
PCI_Express
Standardized protocol
payload and overhead generated by the path layer. It provides synchronization and multiplexing for multiple paths. It modifies overhead bits relating to
Synchronous optical networking
Synchronous_optical_networking
Computer architecture bit width
computer architecture, 64-bit integers, memory addresses, or other data units are those that are 64 bits wide. Also, 64-bit central processing units (CPU)
64-bit_computing
Peer-to-peer file sharing protocol
BitTorrent is a communication protocol for peer-to-peer file sharing (P2P), which enables users to distribute data and electronic files over the Internet
BitTorrent
The UDP tracker protocol is a high-performance low-overhead BitTorrent tracker protocol. It uses the stateless User Datagram Protocol (UDP) for data transmission
UDP_tracker
Rate at which data is processed in communication networks
Channel utilization includes both the data bits and the transmission overhead in the channel. The transmission overhead consists of preamble sequences, frame
Network_throughput
Encoding for a sequence of byte values using 64 printable characters
binary-to-text encoding that uses 64 printable characters to represent each 6-bit segment of a sequence of byte values. As for all binary-to-text encodings
Base64
Maximum rate of data transfer
channel with x bit/s may not necessarily transmit data at x rate, since protocols, encryption, and other factors can add appreciable overhead. For instance
Bandwidth_(computing)
Information rate that can be transmitted over a given bandwidth
bits used for forward error correction (FEC) code and other physical layer overhead. If FEC overhead is excluded, a "bit" refers to a user data bit only
Spectral_efficiency
Victim of Ted Bundy (1955–1974)
tennis shoes. The man had his arm in a sling, and picnickers nearby overhead bits of their exchanges. The man asked Ott for her assistance with putting
Murder_of_Georgann_Hawkins
Unit of data on an Ethernet network
data is transmitted least significant bit (bit 0) first, while the FCS is transmitted most significant bit (bit 31) first. An alternative is to calculate
Ethernet_frame
Scalable coherence technique
the storage overhead ratio becomes 1024/(32×8) = 400%.[citation needed] The coarse bit vector format has a similar structure to the full bit vector format
Directory-based cache coherence
Directory-based_cache_coherence
Family of RISC-based computer architectures
a full 32-bit value, it would require separate operations to store the PC and the status flags. This decision halved the interrupt overhead. Another change
ARM_architecture_family
Device that projects a transparent image
An overhead projector (often abbreviated to OHP), like a film or slide projector, uses light to project an enlarged image on a screen, allowing the view
Overhead_projector
Application binary interface (ABI) of the Linux kernel
registers, faster syscall instruction) while using 32-bit pointers and thus avoiding the overhead of 64-bit pointers. Though the x32 ABI limits the program
X32_ABI
This reduces the amount of CPU overhead and simplifies the code quite a bit. Zmax also treats all files as binary 8 bit files and will require word length
ZMax
File transfer encoding scheme
e-mail. It reduces the overhead over previous US-ASCII-based encoding methods by using an 8-bit encoding method. yEnc's overhead is often (if each byte
YEnc
Line code mapping 8-bit words to 10-bit symbols
interfaces, is a lower-overhead alternative to 8b/10b encoding, having a two-bit overhead per 64 bits (instead of eight bits) of encoded data. This scheme
8b/10b_encoding
Concept in computer security
often introduces a performance cost, or overhead (extra processing time or resources), while hardware-based NX bit implementations have no measurable performance
Executable-space_protection
Fiber optic network transmission standard
Path Overhead The STM-1 base frame is structured with the following characteristics: Length: 270 column × 9 row = 2430 bytes Byte: 1-byte = 8 bit Duration
STM-1
Telephone transmission carrier system used outside US
signals from the level below. Because of the necessity for overhead bits, and justification bits to account for rate differences between sections of the
E-carrier
Synchronous serial communication interface
full-duplex transmission of a single bit occurs. The master sends a bit on the MOSI line while the slave sends a bit on the MISO line, and then each reads
Serial_Peripheral_Interface
Symbol rate measurement in telecommunications
coding overhead, the symbol rate fs can be calculated as f s = R N . {\displaystyle f_{\text{s}}={R \over N}.} By taking information per pulse N in bit/pulse
Baud
Array data structure that compactly stores bits
A bit array (also known as bit map, bit set, bit string, or bit vector) is an array data structure that compactly stores bits. It can be used to implement
Bit_array
their equivalent in other services. The DS1 line rate (2 digroups plus overhead bits) is 1.544 Mbit/s, supporting 24 voice channels or their equivalent in
Digital_multiplex_hierarchy
128-bit number used to identify information in computer systems
A universally unique identifier (UUID) is a 128-bit number used to identify information in computer systems. The term globally unique identifier (GUID)
Universally_unique_identifier
Data used for bitwise operations
& GL_STENCIL_BUFFER_BIT) != 0) { // Clear stencil buffer. } } The advantage to this approach is that function argument overhead is decreased. Since the
Mask_(computing)
Standard for serial communication between devices without host computer
standard format with an 11-bit identifier, and part B is for the extended format with a 29-bit identifier. A CAN device that uses 11-bit identifiers is commonly
CAN_bus
Family of linear error-correcting codes
as Hamming codes in the same overhead of space. Parity adds a single bit that indicates whether the number of ones (bit-positions with values of one)
Hamming_code
Standard for transmitting digital video to a display
maximum gross bit rate (including 8b/10b overhead): 4.95 Gbit/s Net bit rate (subtracting 8b/10b overhead): 3.96 Gbit/s Dual link bit rates are twice
Digital_Visual_Interface
destination user. In telecommunications systems, user information includes user overhead information. "User information". mpirical.com. Retrieved 14 August 2025
User_information
Image file format
supports progressive transmission, which generally incurs a small overhead in bit rate (around 5%). Doubts about patent licence requirements for JBIG1
JBIG
Type of code in coding theory
starts after a) because code word ba contains code word a. Bit slip Comma code Consistent overhead byte stuffing Dynkin sequence Kraus principle Kruskal's
Self-synchronizing_code
Theoratical maximum speed of a network connection
known as gross bit rate, raw bitrate or data signalling rate, which is 125 Mbit/s in fast Ethernet. In case there is a physical layer overhead, for example
Wire_speed
Hardware-assisted virtualization technology
hardware-assisted virtualization technology which makes it possible to avoid the overhead associated with software-managed shadow page tables. AMD has supported
Second Level Address Translation
Second_Level_Address_Translation
Computer network performance metric
stop bits, the overhead for carrying one 8-bit character is 4 bits (one start bit, one parity bit and two stop bits) - or 50%. In this case a 9600 bit/s
Measuring_network_throughput
English fantasy author (1948–2015)
news site Reddit organised a tribute by which an HTTP header, "X-Clacks-Overhead: GNU Terry Pratchett", was added to websites' responses, a reference to
Terry_Pratchett
Microsoft's core set of application programming interfaces on Windows
exe, krnl286.exe or krnl386.exe files on 16-bit Windows, and kernel32.dll and KernelBase.dll on 32 and 64 bit Windows. These files reside in the folder
Windows_API
Serial communication bus
that the bit rates are quoted for the transfers between controller (master) and target (slave) without clock stretching or other hardware overhead. Protocol
I2C
Ethernet frame with more than 1500 bytes payload
of available CPU time by reducing interrupts. This also minimizes the overhead byte count and reduces the number of frames needing to be processed. This
Jumbo_frame
be delivered to other end with minimum delay, jitter or overhead. The input is stream of bits without message boundaries. For this traffic, error detection
ATM_adaptation_layer
Computer hardware technology that uses quantum mechanics
computing, the qubit (quantum bit), serves a similar function as the bit in ordinary or "classical" computing. Unlike a classical bit, which can be in one of
Quantum_computing
Digital display interface
factoring in 8b/10b encoding overhead. This bandwidth is enough for a 4K UHD display (3840 × 2160) at 120 Hz with 24 bit/px RGB color, a 5K display (5120 × 2880)
DisplayPort
Process of device status sampling
the next character. These processes can be as minute as only reading one bit. This is sometimes used synonymously with 'busy-wait' polling. In this situation
Polling_(computer_science)
IEEE standard for floating-point arithmetic
store 64-bit pointer values and IEEE 754 double-precision floating-point values in the same data type, allowing runtimes to eliminate the overhead of extra
IEEE_754
Subsystem for 64-bit Windows for running 32-bit Windows programs
WoW64 (Windows 32-bit on Windows 64-bit) is a subsystem of the Windows operating system capable of running 32-bit applications on 64-bit Windows. It is included
WoW64
64-bit extension of the ARM architecture
AArch64, also known as ARM64, is a 64-bit version of the ARM architecture family, a widely used set of computer processor designs. It was introduced in
AArch64
March 8, 2013 (2013-03-08) November 1, 2013 Giselle and Daniel want to do an overhead lift called "the helicopter" in the routine, but Kate says no because it
List of The Next Step episodes
List_of_The_Next_Step_episodes
"Preamble" to communications message data after a header
syncword. For example, HDLC uses bit stuffing or "octet stuffing", while other systems use ASCII armor or Consistent Overhead Byte Stuffing (COBS). In some
Syncword
Specialized microprocessor optimized for digital signal processing
instruction words in a very tight loop without overhead for instruction fetches or exit testing—such as zero-overhead looping and hardware loop buffers. Saturation
Digital_signal_processor
Index of articles associated with the same name
communications networks: Bit rate, the number of bits that are conveyed or processed per unit of time Data signaling rate or gross bit rate, a bit rate that includes
Data_rate
Rate of modulation of a digital signal
symbols and the data rate. If N bits are conveyed per symbol, and the gross bit rate is R, inclusive of channel coding overhead, the symbol rate can be calculated
Symbol_rate
they discuss finding a way to earn quick cash without incurring much overhead. Marty starts giving traders at other firms the impression that he has
List_of_Traders_episodes
Proposed approach to a large-scale quantum computer based on Schrödinger cat states
suppressed bit-flips, demonstrating the potential for quantum computation with reduced overhead. In 2024, Alice & Bob researchers extended the bit-flip lifetime
Cat_qubit_quantum_computer
Mainframe computer by Control Data
CP are either 15 bits split into 5 3-bit fields designated as f, m, i, j and k or 30 bits split into 3-bit f, m, i and j and an 18-bit K field. The function
CDC_6600
Escape syntax for representing binary data
8-bit characters, then Quoted-Printable becomes both unreadable and extremely inefficient. Base64 is not human-readable, but has a uniform overhead for
Quoted-printable
Size of largest allowed packet on a network segment
link layer, e.g., Ethernet frame. Larger MTU is associated with reduced overhead. Smaller MTU values can reduce network delay. In many cases, MTU is dependent
Maximum_transmission_unit
Type of parallel processing
register was the TX-2, in 1958. It was capable of 36-bit operations and two 18-bit or four 9-bit sub-word operations. The first commercial use of SIMD
Single instruction, multiple data
Single_instruction,_multiple_data
Content of a message excluding headers and metadata
and metadata are sent only to enable payload delivery and are considered overhead. In the context of a computer virus or worm, the payload is the portion
Payload_(computing)
Computer memory accessed in word units
of 8-bit code points. With byte addressing, each code point can be placed in its own independently-addressable MAU with no overhead. With 32-bit word
Word_addressing
Computer hardware device
speeds are configurable. It sends data bits one by one, from the least to most significant, framed by start and stop bits so that precise timing is handled
Universal asynchronous receiver-transmitter
Universal_asynchronous_receiver-transmitter
Self-correcting computer data storage
detect and correct n-bit data corruption which occurs in memory. Typically, ECC memory maintains a memory system immune to single-bit errors: the data that
ECC_memory
with low administrative overhead, which is almost constant irrespective of the size of the distributed overlay network. BitVault system is best suited
BitVault
Peer-to-peer program for uploading and downloading files via the BitTorrent protocol
BitTorrent is a proprietary adware BitTorrent client developed by Bram Cohen and Rainberry, Inc. used for uploading and downloading files via the BitTorrent
BitTorrent_(software)
Interoperability standard for professional audio over IP
Sample formats include 16-bit and 24-bit Linear PCM with 48 kHz sampling frequency, and optional 24-bit 96 kHz and 16-bit 44.1 kHz. Other RTP audio video
AES67
Process for preserving information in DRAM
the defining characteristic of this class of memory. In a DRAM chip, each bit of memory data is stored as the presence or absence of an electric charge
Memory_refresh
File format and file compression program
which is equal to the gzip format except that gzip adds eleven bytes of overhead in the form of headers and trailers. Still, the gzip format is sometimes
Gzip
Tool used to create holes
holes or driving fasteners. It is fitted with a drill bit for making holes, or a screwdriver bit for securing fasteners. Historically, they were powered
Drill
Principal protocol used to stream data across an IP network
new use for this bit. The bit is now used for negotiating the use of Accurate ECN. Flags: 8 bits Contains 8 1-bit flags (control bits) as follows. When
Transmission_Control_Protocol
Combinational digital circuit
subtraction operation, or the overflow bit resulting from a binary shift operation. Zero, which indicates all bits of Y are logic zero. Negative, which
Arithmetic_logic_unit
Process in quantum computing
bits into n {\displaystyle n} physical bits with code distance d {\displaystyle d} ; that is, any logical operation requires flipping at least d bits
Quantum_error_correction
C keyword for defining a structured data type
address. This is useful for passing a struct to a function to avoid the overhead of copying the struct. The -> operator dereferences the pointer (left operand)
Struct (C programming language)
Struct_(C_programming_language)
Line code used in early magnetic data storage and Ethernet
encoding, or bi-phase code) is a line code in which the encoding of each data bit is either low then high, or high then low, for equal time. It is a self-clocking
Manchester_code
Multichannel digital audio interface
minimum 8 × 58 kbit/s of framing produces 98688 bit/s, leaving 1.312% free for timing variation and other overhead. Both versions of the standard accommodate
MADI
Data structure for approximate set membership
linear space overhead for pointers. A Bloom filter with a 1% error and an optimal value of k, in contrast, requires only about 9.6 bits per element, regardless
Bloom_filter
Microcontroller family
32-bit Infineon microcontroller family, targeting the automotive industry. It is based on multicore architecture of up to three independent 32-bit TriCore
Infineon_AURIX
Computer operating system kernel
needed] because of time-consuming kernel/user mode context switches and overhead stemming from mapping or copying messages between the address spaces of
XNU
Feature of computer systems
DMA capability can transfer data to and from devices with much less CPU overhead than computers without DMA. DMA can also be used for memory-to-memory transfers
Direct_memory_access
Adding data to a message prior to encryption to hide its length
total size, the padding will not add much overhead, but the padding will obscure only the least significant bits of the object's total length, leave the
Padding_(cryptography)
Microprocessor model
on June 1, 1979, the 8088 has an eight-bit external data bus instead of the 16-bit bus of the 8086. The 16-bit registers and the one megabyte address
Intel_8088
Specialized Internet application protocol
requirements such as multicast support, very low overhead, and simplicity. Multicast, low overhead, and simplicity are important for Internet of things
Constrained Application Protocol
Constrained_Application_Protocol
Type of line code where two nonzero values are used
"zero" level, and when it is transmitting bits the line is either in a +V or -V state corresponding to the binary bit being transmitted. Thus, the line always
Bipolar_encoding
Lossy audio compression format
Layer III) and generally achieves higher sound quality than MP3 at the same bit rate. AAC encoded audio files are typically packaged in an MP4 container
Advanced_Audio_Coding
Layer for end-to-end network communication
image of a tolerated protocol, or be encapsulated in UDP, accepting some overhead. QUIC follows the latter approach: the QUIC specification defines it as
Transport_layer
Lossless compression algorithm
encoder, using a complex model to make a probability prediction of each bit. The dictionary compressor finds matches using sophisticated dictionary data
LZMA
Item of harness over the head of a horse
also called a check rein or overcheck, is a type of rein attached to the bit on a bridle, that runs over the head of the horse, attaching to the harness
Bearing_rein
Raster graphics file format
specific transformations to be applied to the input images. The storage overhead of derived images is small. Image sequences Storage of multiple time-related
High Efficiency Image File Format
High_Efficiency_Image_File_Format
Large formation of floating ice
chunks of floating glacially derived ice are called "growlers" or "bergy bits". Much of an iceberg is below the water's surface, which led to the expression
Iceberg
Type of computer memory
or DRAM) is a type of random-access semiconductor memory that stores each bit of data in a memory cell. A DRAM memory cell usually consists of a microscopic
Dynamic_random-access_memory
the least common multiple of all framerates used, and produces slight overhead compared to true VFR. The following extensions are also often used for
Comparison of video container formats
Comparison_of_video_container_formats
Low-level programming language family
device, as in microcontrollers), or a data link using either an exact bit-by-bit copy of the object code or a text-based representation of that code (such
Assembly_language
travel, tourism, insurance
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travel, tourism, insurance