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.

The PCjr system was compact, low cost, and designed for applications related to learning, entertainment, and personal productivity. The computer had an Intel 8088 microprocessor that ran at 4.77 MHz–faster than most systems on the market at the time.

This page walks the reader through the restoration of my IBM PCjr, the addition of jr-IDE Sidecar, Power Supply Replacement, DOS 5.0 patches and installation.

2019年5月1日 · When IBM announced the IBM PCjr home computer in 1983, the industry expected it to dominate the home market. Who didn’t want a computer that could run office software while offering game console-like graphics and sound capabilities? But it didn’t work out that way. Instead, it flopped like New Coke. Why did the IBM PCjr fail?

The now infamous PCjr keyboard was quickly replaced by IBM - the original "chiclet" style had tall, hard plastic (not rubber) keys which made touch-typing virtually impossible. Additionally, cost-saving techniques used in the design limited the expansion, memory and speed of the system.

2023年10月4日 · The PCjr video mode is remembered as “Tandy graphics” because it was copied by Radio Shack for a popular line of low-cost PC compatible machines that replaced the aging TRS-80 series, succeeding where IBM had failed in …

2014年1月29日 · The IBM PCjr flopped, but it started the era of consumer oriented PCs. The successful Tandy 1000, a close clone, shows how IBM could have gotten it right.

2020年11月4日 · This is the manual for the Cassette and Cartridge versions of BASIC on the IBM PCjr. Unlike other manuals, this manual contains important details regarding the hardware of the PCjr.

2014年12月31日 · This technical reference is missing about 50 pages of Logic diagrams, making this guide quite useless for understanding the PCjr on a hardware level.

With the optional internal modem- a compact elecmnic device that lets your computer com- municate over standard phone lines-that was specifically designed to fit neatly inside the IBM PCP System Unit, you can link Junior to the massive information resources of various com- …