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PCjr; Pcjr; Pc jr; PC Jr; IBM PC Junior; IBM PC junior; IBM PC jr; Pc jr.; IBM PC Jr.; IBM PC Jr; Ibm pc jr; Ibm pcjr; IBM 4860; IBM Peanut; IBM 4860-004; IBM 4860-067; Chiclet test; Chiclet rule

IBM PCjr

<computer> (IBM PC Junior) A floppy disk-based home computer with an Intel 8088 CPU and a chiclet keyboard, released in November 1983. The PCjr could be expanded to have two floppy drives and 640 kilobytes of RAM using sidecars. Some even had a mouse and could run drawing programs with popup menus. (1995-10-06)

PCjr

IBM PCjr

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

ويكيبيديا

IBM PCjr

The IBM PCjr (pronounced "PC junior") was a home computer produced and marketed by IBM from March 1984 to May 1985, intended as a lower-cost variant of the IBM PC with hardware capabilities better suited for video games, in order to compete more directly with other home computers such as the Apple II and Commodore 64.

It retained the IBM PC's 8088 CPU and BIOS interface, but provided enhanced graphics and sound, ROM cartridge slots, built-in joystick ports, and an infrared wireless keyboard. The PCjr supported expansion via "sidecar" modules, which could be attached to the side of the unit.

Despite widespread anticipation, the PCjr was ultimately unsuccessful in the market. It was only partially IBM compatible, limiting support for IBM's software library, its chiclet keyboard was widely criticized for its poor quality, expandability was limited, and it was initially offered with a maximum of 128 KB of RAM, insufficient for many PC programs.

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