NEC PC-100

The development was operated by NEC Electronic Device Business Group, ASCII (Microsoft dealer in Japan) and Cybernet Kogyo, a subsidiary of Kyocera.

Far ahead of its time and too costly, PC-100 did not sell well. A complete set with the printer PC-PR201 that could print alphabet, hiragana, katakana and kanji, came to nearly ¥1 million. For comparison, the Nintendo Family Computer released in July of the same year was only ¥14,800 and the vaunted Apple Lisa 2 sold for ¥2.2 million. The cheaper PC-9801F2 also by NEC outsold it.

• model10 (¥398,000) - a 5-inch 2D (360 KB) floppy disk drive
• model20 (¥448,000) - two 5-inch 2D floppy disk drives
• model30 (¥558,000) - two 5-inch 2D floppy disk drives

Competition with PC-98

NEC phased out the PC-100 due to reorganization of its business units rather than its technical issues.

The Electronic Device Business Group launched the PC-8001 in 1979, making NEC the biggest PC vendor in Japan. However, the Japanese personal computer industry had just begun, and it was unclear which market would grow. Other large computer manufacturers, IBM Japan and Fujitsu, had not focused on the personal computer industry yet. Hitachi and Sharp released home computers for hobbyists. Sord and Oki Electric Industry released personal computers for small-business sector.

In 1981, NEC expanded personal computer lines into three groups: NEC Home Electronics, Information Processing Business Group and Electronic Device Business Group, with each specializing in a particular series. The Electronic Device Business Group developed the PC-8801 for consumers who wanted to use it for both hobby and business. The Information Processing Business Group began developing the PC-9801 specialized for business market.

By 1983, the Japanese personal computer industry grew greatly, and its distribution network became complex. It caused the problem for NEC that each group competed to sell its own product to the same chain. Their biggest competitor was each group in the company, and they contested for the leadership. One software company's president recalled the sales section of PC-9801 often said "Down with the 88!".

The PC-100 and PC-9801F were released at the same time, and the problem surfaced. A store manager complained he couldn't determine which salesperson to follow. In December 1983, NEC decided to consolidate personal computer business into two divisions: NEC Home Electronics to oversee the 8-bit home computer line, and Nippon Electric's Information Processing Business Group to handle the 16-bit personal computer line. The Electronic Device Business Group passed off their personal computer business to NEC Home Electronics. NEC Home Electronics discontinued development of the PC-100, PC-6000 series, PC-6600 series and PC-8000 series, and these lines were merged into the PC-8800 series to concentrate on the home computer market.