load capacity is limited; even simple computers often require bus amplifiers.

The processor needs three power sources (-5, +5, and +12 V) and two non-overlapping high-amplitude synchronizing signals. Nonetheless, at least the late Soviet version ??580??80? was able to work with a single +5 V power source, the +12 V pin being connected to +5 V and the -5 V pin to ground.

The pin-out table, from the chip's accompanying documentation, describes the pins as follows:

Support chips

A key factor

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