Counting device

Details Counting device Counting device

1996-06-21

1998-04-07

Wambach, Margaret Rose

Electrical pulse counters, pulse dividers, or shift registers: c

Systems

With programmable counter

377 55, 395439, H03K 2366

Patent

active

057373817

ABSTRACT:
The invention provides a counting device and a direct memory access system using the counting device. In the counting device, a carry/borrow signal to be supplied from a predetermined one-bit counter among a plurality of one-bit counters to another one-bit counter in the subsequent stage is inputted to an input/cutoff element such as an AND circuit. The input/cutoff element is also supplied with a control signal for controlling the input/cutoff of the carry/borrow signal. Thus, the range of the values to be counted can be changed.

REFERENCES:
patent: 4789951 (1988-12-01), Birkner et al.
patent: 5159696 (1992-10-01), Hartnett
patent: 5339343 (1994-08-01), Hashimoto
patent: 5371773 (1994-12-01), Ihara et al.
patent: 5432830 (1995-07-01), Bonnot
Mitsubishi User's Manual, Mitsubishi Electric Corporation (Dec. 1993).

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