paper-tape code
61ASR-33 Teletype — Introduced about 1963, Teletype Corporation s ASR33 was a very popular model of teleprinter. Designed for light duty office use, it was much flimsier (and cheaper) than its heavy duty cousin, the Model 35ASR.The printing mechanism was an array of …
62DRTE Computer — The DRTE Computer was a transistorized computer built at the Defence Research Telecommunications Establishment (DRTE), part of the Canadian Defence Research Board. It was one of the earlier fully transistorized machines, running in prototype form …
63Instructograph — The Instructograph was a paper tape based machine used for the study of Morse code.The paper tape mechanism consisted of two reels which passed a paper tape across a reading device that actuated a set of contacts which changed state dependent on… …
64APEXC — The APEXC, or All Purpose Electronic X Ray Computer was designed by Andrew D. Booth at Birkbeck College, London in the early 1950s. From 1943 on, he started working on the determination of crystal structures using X ray diffraction data. The… …
65Unit record equipment — Before the advent of electronic computers, data processing was performed using electromechanical devices called unit record equipment, electric accounting machines (EAM) or tabulating machines. Unit record machines were as ubiquitous in industry… …
66Parity bit — 7 bits of data (number of 1s) 8 bits including parity even odd 0000000 (0) 00000000 10000000 1010001 (3) 11010001 01010001 1101001 (4) 01101001 11101001 1111111 (7) 11111111 …
67IBM System/3 — The IBM System/3 (introduced 1969 discontinued 1985) was a low end business computer aimed at new customers and organizations that still used IBM 1400 series computers or unit record equipment. It was the first member of what IBM refers to as… …
68KL-7 — The TSEC/KL 7, code named ADONIS, was a rotor machine encryption system introduced in the 1950s by the U.S. National Security Agency. It had eight rotors, seven of which moved in a complex pattern. The non moving rotor was in the middle of the… …
69LGP-30 — It was first manufactured in 1956 with a retail price of $47,000. The LGP 30 was commonly referred to as a desk computer. It was 26 inches deep, 33 inches high, and 44 inches long, exclusive of the typewriter shelf. The computer weighed… …
70Elliott 803 — The Elliott 803 was a small computer manufactured by the British company Elliott Brothers in the 1960s. About 250 were built and most British universities and colleges bought one.HistoryThe 800 series started with the 801, a one off test machine… …
