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Barcode symbology based on pulse-width modulation
Plessey Code is a 1D linear barcode symbology based on pulse-width modulation, developed in 1971 by The Plessey Company plc, a British-based company.
Plessey_Code
British electronics, defence and telecommunications company
The Plessey Company plc was a British electronics, defence and telecommunications company. It was listed on the London Stock Exchange and was a constituent
Plessey
Type of two-dimensional barcode
A QR code, short for quick-response code, is a type of two-dimensional matrix barcode invented in 1994 by Masahiro Hara of the Japanese company Denso
QR_code
Barcode symbology
(also known as Modified Plessey) is a barcode symbology developed by the MSI Data Corporation, based on the original Plessey Code symbology. It is a continuous
MSI_Barcode
the British Plessey Company, an electronics and telecommunications group built up by his father, Allen George Clark. His career with Plessey was dominated
John_Allen_Clark
Topics referred to by the same term
Plessey was a British electronics company. It can also refer to: Plessey Code, a British barcode system Plessey System 250, a computer system that implements
Plessey_(disambiguation)
Optical machine-readable representation of data
by Plessey. In June 1974, Marsh supermarket in Troy, Ohio used a scanner made by Photographic Sciences Corporation to scan the Universal Product Code (UPC)
Barcode
British military research project code names
Used the Red Beard physics package Violet Picture – UHF Homer, built by Plessey – Fitted to many RAF aircraft Violet Vision – nuclear warhead for Corporal
Rainbow_Code
Barcode system for tracking trade items
basis of the Uniform Product Code. Technology firms including Charegon, IBM, Litton-Zellweger, Pitney Bowes-Alpex, Plessey-Anker, RCA, Scanner Inc., Singer
Universal_Product_Code
Type of barcode
Bowes Corp. It and its variants are also known as Codeabar, Ames Code, NW-7, Monarch, Code 2 of 7, Rationalized Codabar, ANSI/AIM BC3-1995 or USD-4. Although
Codabar
Type of matrix barcode
The Aztec Code is a matrix code invented by Andrew Longacre, Jr. and Robert Hussey in 1995. The code was published by AIM, Inc. in 1997. Although the Aztec
Aztec_Code
Standard barcode system used in global trade
consists of four components: GS1 prefix – 3 digits Manufacturer code – variable length Product code – variable length Check digit The first three digits of the
International_Article_Number
2D matrix symbology
JAB Code (Just Another Barcode) is a colour 2D matrix symbology made of colour squares arranged in either square or rectangle grids. It was developed by
JAB_Code
Variable length, discrete barcode symbology
Code 39 (also known as Alpha39, Code 3 of 9, Code 3/9, Type 39, USS Code 39, or USD-3) is a variable length, discrete barcode symbology defined in ISO/IEC
Code_39
Barcode format
Code 128 is a high-density linear barcode symbology defined in ISO/IEC 15417:2007. It is used for alphanumeric or numeric-only barcodes. It can encode
Code_128
Plessey System 250, also known as PP250, was the first operational computer to implement capability-based addressing, to check and balance the computation
Plessey_System_250
1757 battle of the Seven Years' War
Administrators Chief Ministers Chief Secretaries Law Constitution Penal Code Fundamental rights, principles and duties Human rights Supreme Court Chief
Battle_of_Plassey
Two-dimensional matrix barcode
A Data Matrix is a two-dimensional code consisting of black and white "cells" or dots arranged in either a square or rectangular pattern, also known as
Data_Matrix
Topics referred to by the same term
N-acetylglucosaminephosphotransferase, a class of enzymes GEC Plessey Telecommunications, a defunct British telecommunications manufacturer GPT
GPT
Type of matrix barcode
QR Code (also known as rMQR Code) is two-dimensional (2D) matrix barcode invented and standardized in 2022 by Denso Wave as ISO/IEC 23941. rMQR Code is
Rectangular_Micro_QR_Code
Error-detection code for decimal digits
A two-out-of-five code uses ten possible combinations of two ones and three zeroes to encode the decimal digits using five bits. It is used for its error
Two-out-of-five_code
Type of matrix barcode
Han Xin code (汉信码 in Chinese, Chinese-sensible code) is two-dimensional (2D) matrix barcode symbology invented in 2007 by Chinese company The Article
Han_Xin_code
decided to accept Crossbar equipment into its network. This code was given to Plessey's 5005A switch, which was used for local exchanges in non-director
TXK
Type of polar matrix barcode
ShotCode is a circular barcode created by High Energy Magic of Cambridge University. It uses a dartboard-like circle, with a bullseye in the centre and
ShotCode
Type of matrix barcode
DotCode is a two-dimensional (2D) matrix barcode invented in 2008 by Hand Held Products as a replacement for the outdated Code 128. At this time, it is
DotCode
Electronic device
from the light source as the tip crosses each bar and space in the printed code. The photodiode generates a waveform that is used to measure the widths of
Barcode_reader
Barcode symbology
Code 11 is a barcode symbology developed by Intermec in 1977, and it is used primarily in telecommunications. The symbol can encode any length string consisting
Code_11
structure and encoding system unique to Canada Post. This particular bar code system is used on "flats" (which are larger-than-letter-size pieces of mail
PostBar
English computer scientist (born 1955)
graduation, Berners-Lee worked as an engineer at the telecommunications company Plessey in Poole, Dorset. In 1978, he joined D. G. Nash in Ferndown, Dorset, where
Tim_Berners-Lee
Barcode system used by Royal Mail
RM4SCC (Royal Mail 4-State Customer Code) is the name of the barcode character set based on the Royal Mail 4-State Bar Code symbology created by Royal Mail
RM4SCC
Machine-readable symbol system
international postal code. MaxiCode supports both numeric postal codes (e.g. a ZIP Code), and alphanumeric postal codes. A 3-digit country code encoded per ISO
MaxiCode
Multi-row barcode format
Code 16K is a multi-row barcode format developed by Ted Williams at the American company Laserlight Systems in 1989. In the US and France, the code is
Code_16K
American activist (died 1925)
Social exclusion Related topics Apartheid laws Anti-miscegenation laws Black Codes Corporative federalism Discrimination Ghetto benches Hafrada Jim Crow laws
Homer_Plessy
Type of barcode
Patch Code is a barcode developed by Kodak for use in automated scanning. A Patch Code consists of two wide bars (0.2 inches (5.1 mm) ± 0.01 inches (0
Patch_Code
British military radar system
was a military air traffic control and early warning radar developed by Plessey and first produced in 1975. It used a pencil beam and simple frequency
Plessey_AR-3D
Cat-shaped handheld barcode reader
promoted by Digital Convergence. The CueCat was named CUE for the unique bar code which the device scanned and CAT as a wordplay on "Keystroke Automation Technology"
CueCat
Type of barcode
stands for Portable Data File, while "417" signifies that each pattern in the code consists of 4 bars and spaces in a pattern that is 17 units (modules) long
PDF417
Computer peripheral to print barcode labels or tags
Computer printer Label printer Weightman, Gavin. "The History of the Bar Code". Smithsonian Magazine. Retrieved 2023-06-21. "Barcode Labels: A Comprehensive
Barcode_printer
Barcode symbology
Code 93 is a barcode symbology designed in 1982 by Intermec to provide a higher density and data security enhancement to Code 39. It is an alphanumeric
Code_93
US Postal Service barcode symbology
United States Postal Service to assist in directing mail. The ZIP Code or ZIP+4 code is encoded in half- and full-height bars. Most often, the delivery
POSTNET
Type of barcode
was created by David Allais, who also invented barcodes Code 39, Code 11, Code 93, and Code 49. ITF encodes pairs of digits; the first digit is encoded
Interleaved_2_of_5
Barcode symbology
Pharmacode, also known as Pharmaceutical Binary Code, is a barcode standard, used in the pharmaceutical industry as a packing control system. It is designed
Pharmacode
British public official (born 1965)
Redruth, Cornwall, to Peggy and Martin Casey, a union representative at Plessey. She was educated at Oaklands Catholic School, near Portsmouth, and graduated
Louise Casey, Baroness Casey of Blackstock
Louise_Casey,_Baroness_Casey_of_Blackstock
Barcode for use on U.S. mail
and PLANET. An Intelligent Mail barcode has also been referred to as a One Code Solution and a 4-State Customer Barcode, abbreviated 4CB, 4-CB or USPS4CB
Intelligent_Mail_barcode
Communications and information business arm of Siemens
plc, acquired Plessey, a British-based international electronics, defence and telecommunications company founded in 1917. Most of Plessey's assets were
Siemens_Communications
The GS1 Databar Coupon code has been in use in retail industry since the mid-1980s. At first, it was a UPC with system ID 5. Since UPCs cannot hold more
GS1_DataBar_Coupon
(also known as Code 2 of 5 Matrix.) is a variable length, discrete, two width symbology. Matrix 2 of 5 is a subset of two-out-of-five codes. Unlike Industrial
Matrix_2_of_5
EAN/UPC symbology barcode
barcode and is derived from the longer International Article Number (EAN-13) code. It was introduced for use on small packages where an EAN-13 barcode would
EAN-8
General-purpose programming language
line. The systems were used in factory automation by customers such as Plessey and Northern Telecom. They are no longer listed as available from IBM,
A_Manufacturing_Language
Card trick and probabilistic concept
p)" (PDF). Mathematics of Computation. 32 (143). Mathematics Department, Plessey Telecommunications Research, Taplow Court, Maidenhead, Berkshire, UK: American
Kruskal_count
Interleaved 2 of 5 ITF-14 Matrix 2 of 5 MSI Barcode Patch Code Pharmacode Plessey Telepen UPC UPC-A MaxiCode Post office barcodes Facing Identification Mark PostBar
Paper_key
Telecommunications certification organization
only allowed (via approval) the four British manufacturers (STC, GEC, Plessey, and the "Thorn-Ericsson" partnership) to supply its twenty five types
British Approvals Board for Telecommunications
British_Approvals_Board_for_Telecommunications
British electrical engineering company
Retrieved 6 April 2015. 'Plessey to pay £30m for Ferranti's chip business', in Computergram International, 27 November 1987, p. 1. "PLESSEY TO ANNOUNCE COLLABORATIVE
Ferranti
German multinational conglomerate
company Plessey. Plessey's holdings were split, and Siemens took over the avionics, radar and traffic control businesses—as Siemens Plessey. In 1977
Siemens
Radio Communications System
Clansman radio equipment was built by Racal, Mullard Equipment Ltd (MEL) and Plessey, although headsets and ancillaries were also produced by Amplivox (who
Clansman_(military_radio)
Data tags that are read out of focus
digital camera, focusing at infinity. With this optical setup, the tiny code appears large enough to read. Bokodes are readable from different angles
Bokode
History of air traffic control coordinated across the entire United Kingdom
a contract with Plessey for their air defence system, to be delivered by late 1967, known as the Hubcap Project. In July 1965 Plessey had a £400,000 order
History of air traffic control in the United Kingdom
History_of_air_traffic_control_in_the_United_Kingdom
Family of stacked 1D barcodes
1989 by Heinrich Oehlmann. Codablock barcodes are based on stacked Code 39 and Code 128 symbologies and have some advantages of 2D barcodes. The barcodes
Codablock
Type of telephone exchange in UK
Post Office Telecommunications (later to become British Telecom), GEC, Plessey, and Standard Telephones and Cables (STC), and was first shown in public
System_X_(telephony)
Human settlement in England
century, are Grade II listed. The concept of a research lab covering the Plessey company's interests in materials germinated in 1934 when its founders Allen
Caswell,_Northamptonshire
cannot be written to by the process that will use them. For example, the Plessey System 250 required that all capabilities be stored in capability-list
Capability-based_addressing
Family of RISC-based computer architectures
2025. "FPA10 Data Sheet" (PDF). chrisacorns.computinghistory.org.uk. GEC Plessey Semiconductors. 11 June 1993. Retrieved 26 November 2020. In relation to
ARM_architecture_family
2D barcode encoding
special formats, which can be used, as an example, in GS1 Composite bar code symbology. MicroPDF417 barcode was patented in 1996, by Frederick Schuessler
MicroPDF417
Type of matrix barcode
instead of the square pixels conventionally associated with 2D barcodes or QR codes. Data density is increased by using a palette of 4 or 8 colors for the triangles
High_Capacity_Color_Barcode
Telecommunication system for establishing telephone calls
System X originally developed by the British Post Office (later BT), GEC, Plessey and STC, is a type of digital exchange used by BT Group in the UK public
Telephone_exchange
Type of barcode
A SPARQCode is a matrix code (or two-dimensional bar code) encoding standard that is based on the physical QR Code definition created by Japanese corporation
SPARQCode
Line of single-chip microprocessors from Microchip Technology
EPROM to produce a programmable channel I/O controller. At the same time Plessey in the UK released NMOS processors numbered PIC1650 and PIC1655 based on
PIC_microcontrollers
4-bit microprocessor
ideas for the architecture of the first microprocessor, Hoff related that Plessey, "a British tractor company", had donated a minicomputer to Stanford, and
Intel_4004
16-bit microprocessor family
this drove Ferranti into bankruptcy. The chip division was purchased by Plessey who continued producing some of the F100 family support chips as late as
Ferranti_F100-L
Obsolete colored barcode system designed to identify railcars
11: car number. Lines 2 to 5: equipment/owner code. Line 2: equipment code Lines 3 to 5: ownership code Line 1: start label. The first digit of the equipment
KarTrak
92, RAF name for Lockheed Martin AN/FPS-117 AMES Type 93, Plessey AR-320 AMES Type 94, Plessey AR-3D AMES Type 96, Marconi S649, dual-band 3/1.3 GHz 2D
Air Ministry Experimental Station
Air_Ministry_Experimental_Station
microcoded machine known as GEMINI that had been developed by RSRE and Plessey Electronic Systems to emulate legacy systems in process control and other
Flex_machine
Irish and Welsh rock musician, U2 guitarist (born 1961)
electricity board, and subsequently worked for the electronics company Plessey. Evans has an elder brother called Richard (often called Dik) and a younger
The_Edge
Single-chip AM radio integrated circuit
was designed and supplied by Ferranti, but was second sourced from GEC-Plessey. The ZN414 was popular amongst hobbyists, as a fully working AM radio could
ZN414
Computer memory management scheme
Atlas, jointly developed by Ferranti, the University of Manchester and Plessey in 1963. The machine had an associative (content-addressable) memory with
Memory_paging
Barcode symbology
without using shift characters for code switching, and only using two different widths for both bars and spaces. (Unlike Code 128, which uses shifts and four
Telepen
Alpha-numeric code used to uniquely identify UK railway lines
a combination of ELR and mileage. For example, EJM 13M 16ch refers to Plessey Road level crossing on the former Earsdon Junction to Morpeth North Junction
Engineer's_Line_Reference
and contact details. Wikimedia Commons has media related to Semacode. QR Code an implementation of a similar concept invented in Japan. PDF417 Object hyperlinking
Semacode
Town in East London, England
Redbridge Museum. The radio, electronics and telecommunications company Plessey, founded in 1917 in Marylebone, moved to Cottenham Road in Ilford early
Ilford
Supercomputer of the 1960s
joint development effort among the University of Manchester, Ferranti and Plessey. Two other Atlas machines were built: one for BP and the University of
Atlas_(computer)
1940s–1950s British computer
from the Atlas Computer of the University of Manchester, Ferranti, and Plessey. On 13 January 2011, the Computer Conservation Society announced that it
EDSAC
Electronic circuit formed on a small, flat piece of semiconductor material
transistors provided a few logic gates, and early linear ICs such as the Plessey SL201 or the Philips TAA320 had as few as two transistors. The number of
Integrated_circuit
British manufacturer of telecom equipment
engineered withdrawal in 1982, STC and its (now equally defunct) partners Plessey and GEC, developed the fully digital System X switch which is still in
Standard Telephones and Cables
Standard_Telephones_and_Cables
Model of IBM mainframe specially designed for use in air traffic control
The [x,y] data was sent on to a Plessey radar display system. 4) Correlation – by matching the radar beacon codes transmitted by an aircraft and by
IBM_9020
Cold War-era British early warning radar
Martello (as AMES Type 90 and 91) and to a lesser extent the more mobile Plessey AR320 (as AMES Type 93) and a collection of other designs including an
AMES_Type_85
two width symbology. Industrial 2 of 5 is a subset of two-out-of-five codes. Industrial 2 of 5 is one of the first 1D and oldest barcodes and can encode
Industrial_2_of_5
professor of neuropsychology at the University of Bristol; Roger Mathias of Plessey Radar and the Multi-function Electronically Scanned Adaptive Radar (MESAR)
List_of_Equinox_episodes
County of England
and forests Druridge Bay Country Park, Bedlington Kielder Forest and Kielder Water Northumberland National Park Plessey Woods Country Park, Bedlington
Northumberland
Type of barcode
com/clients/polish-masters-of-photography-trust-piql/ www.piql.com/newsroom/githubs-code-now-stored-forever-on-piqlfilm/ Archival File Systems (AFS) Piql film-reader
Boxing_barcode
Town in Northumberland, England
1692 to 1709, the Plessey Waggonway was constructed from Plessey to Blyth-Nook. Part of the waggonway now forms the route of Plessey Road, where it derives
Blyth,_Northumberland
Postal mark
The Facing Identification Mark, or FIM, is a bar code designed by the United States Postal Service to assist in the automated processing of mail. The FIM
Facing_Identification_Mark
Personal computer
eventual availability. Fabrication of the device was performed by GEC Plessey Semiconductors and was reported to be in "an advanced stage of production"
Acorn_Archimedes
Early microprocessor
in scientific instruments and commercial products. The 1802 was used in Plessey payphones. Post-1980 Chrysler and associated model vehicles use the 1802
RCA_1802
titles of nobility John Allen Clark (1926–2001), managing director of Plessey Sir Arthur Cory-Wright (1869–1951), chairman of William Cory & Son (coal)
List_of_Old_Harrovians
Shortwave radio
modern solid-state receivers can be very large and heavy, such as the Plessey PR2250, the Redifon R551 or the Rohde & Schwarz EK070. DXing List of shortwave
Shortwave_radio_receiver
– (i) General Problem Solver – Global Positioning System GPT – (i) GEC-Plessey Telecommunications – General Purpose Technology – Get Paid To website GPU
List_of_acronyms:_G
Town in West Dunbartonshire, Scotland
were test-fired in Loch Long, and in the early 1970s was the scene of the Plessey sit-in. The building now hosts a shopping mall but has retained many of
Alexandria, West Dunbartonshire
Alexandria,_West_Dunbartonshire
Australian underwater naval vessel
responded: a consortium led by Rockwell International of the United States, Plessey of the United Kingdom, Signaal of the Netherlands, Sintra Alcatel of France
Collins-class_submarine
Brazilian defunct company (1923-1976)
where the telephone system was automated with 5005 crossbar exchanges (Plessey) equipped for DDD and one-digit prefixes. In 1968, the Embu automatic exchange
Companhia Telefônica Brasileira
Companhia_Telefônica_Brasileira
Village in Somerset, England
is Thales Underwater Systems, formerly Marconi Underwater Systems and Plessey Naval Systems. The water treatment centre off Temple Lane, east of the
Templecombe
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