In September 1978, NEC announced the NEAC System 150, which was equipped with Japan's first interactive OS (ITOS). But the NEAC System 100 Model 40, Model 60 and Model 80, which were announced in October, brought ITOS into the foreground.
The distinguishing feature of models equipped with ITOS is that they could be easily used, even by a person with no specialized knowledge of computers, provided the person had knowledge of the work being done. The user simply interacts with the machine using ordinary language. More specifically, when the computer asks a question on the display, the user responds with "Yes" or "No", and if they select their desired options from the menu, they can do things like create programs or do business processing.
Another feature is that these machines were oriented toward distributed processing (which was the trend at the time), and were equipped with a wealth of communication functions to enable the creation of online systems with a host computer.
Technologically, the systems achieved higher system performance, greater compactness and higher reliability by using the µCOM1600 MOS-based microprocessor, and custom LSI.
|Item||NEAC System 50||NEAC System 100||NEAC System 150|
|Model 40||Model 60||Model 80|
|Announcement||September 1978||October 1978||September 1978|
|Central processing unit||Max. memory capacity||56KB||128KB||128KB||192KB||256KB|
|Arithmetic element||MOS LSI||MOS LSI||Bipolar LSI|
|Console or display station||Number connected||x1||1--4||x1||1--16||1--32|
|Magnetic disk||Capacity||-||16/32MB (optional)||16/32MB||16/32/64MB|
|Number connected||Max. 2|
|Number connected||1||Max. 4|
|COBOL, High-level COBOL, BASIC for business, FORTRAN, TOOLS-F|