パーソナルコンピュータとプリンタによるデータレコーダの試作

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Other Title
  • パーソナルコンピュータとプリンタによるデータレコーダの試作(人間環境学)
  • パーソナル コンピュータ ト プリンタ ニ ヨル データ レコーダ ノ シサク
  • Development of a data recorder by a personal computer and printer (HUMAN ENVIRONMENT)

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Abstract

A simple 8 channel data recorder was developed which was constructed by a personal computer with A-D converter and a printer. Sampling interval was created with a built-in timer IC (8253), A-D converted data were written into memory ICs not by DMA but with data transfer instruction, and graphic data display on CRT was not executed with graphic controller IC but by writing data into VRAM directly. The printer was driven with graphic command (ESC/Page mode) directly. As the result, the execution speed was very high, and the software for data recording can run on many kinds of personal computers and A-D converter boards by not modifying the program or in little. As this software can be altered at will by each user, this equipment is convenient for anyone engaging in measuring various kinds of electrical signal. As an example, whole body reaction time, electromyogram, goniogram etc. were measured simultaneously : satisfactory result was acquired.

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