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Qué (quién) es IBM 2741 - definición

IBM HARDCOPY TERMINAL INTRODUCED IN 1965

IBM 2740

IBM 2741

<printer> A slow, letter-quality printing device and terminal based on the IBM Selectric typewriter. The print head was a little sphere resembling a golf ball, bearing reversed embossed images of 88 different characters arranged on four parallels of latitude; one could change the font by changing the golf ball. The device communicated at 134.5 bits per second, half duplex. When the computer transmitted, it physically locked the keyboard. This was the technology that enabled APL to use a non-EBCDIC, non-ASCII, and in fact completely non-standard character set. This put it 10 years ahead of its time - where it stayed, firmly rooted, for the next 20, until character displays gave way to programmable bit-mapped devices with the flexibility to support other character sets. (2006-08-04)

IBM 2741

The IBM 2741 is a printing computer terminal that was introduced in 1965. Compared to the teletypewriter machines that were commonly used as printing terminals at the time,

https://en.wikipedia.org/wiki/IBM_2741

IBM 4300

LINE OF IBM MAINFRAMES SOLD FROM 1979 THROUGH 1992

Ibm 4300 series; 43xx; IBM 4300 series; IBM 4381; 4381; IBM 4341; IBM ES/4381; IBM 4361; IBM 43xx

The IBM 4300 series are mid-range systems compatible with System/370 that were sold from 1979 through 1992. They featured modest electrical and cooling requirements, and thus did not require a data center environment.

https://en.wikipedia.org/wiki/IBM_4300

Wikipedia

IBM 2741

The IBM 2741 is a printing computer terminal that was introduced in 1965. Compared to the teletypewriter machines that were commonly used as printing terminals at the time, the 2741 offers 50% higher speed, much higher quality printing, quieter operation, interchangeable type fonts, and both upper and lower case letters.

It was used primarily with the IBM System/360 series of computers, but was used with other IBM and non-IBM systems where its combination of higher speed and letter-quality output was desirable. It was influential in the development and popularity of the APL programming language.

It was supplanted, starting in the mid-1970s, primarily by printing terminals using daisy wheel mechanisms.

https://en.wikipedia.org/wiki/IBM 2741