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Electronics

Early Mitsubishi MSI MOS on three chips:

  • MA8111
  • MA8112
  • MA8113

Additional logic is provided with Mitsubishi M58--- family chips. Transistor buffering between logic levels and the display tubes.

Display by 10 7-segment vacuum fluorescent tubes.

Architecture, Memory & Speed

10 displayed digits

Construction

One main PCB with 3 ICs as above and one support IC. Low volt power supply and high volt display supply on same board.

Keyboard has reed switches with moving magnets on the key stems

There is comprehensive interconnection of all major internal metal parts for grounding and MOS static protection.

Brother Pro Cal 310
Brother Pro Cal 310
Brother Pro Cal 310
Brother Pro Cal 310

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