Apparatus for presetting a counter to a given initial count

Details Apparatus for presetting a counter to a given initial count Apparatus for presetting a counter to a given initial count

1974-05-06

1976-06-08

Shaw, Gareth D.

Registers

Platform operated

Platform actuated traffic counters

235 92CC, 235 92EA, 235 92CA, 235 92R, 328 48, H03K 2118, H03K 2136

Patent

active

039625656

ABSTRACT:
Apparatus for presetting an electric pulse counter to a given count without any action on its parallel input terminals and/or its parallel output terminals. The apparatus comprises a pulse generator which is connected, during a preset operation, to the count input of the counter through an electronic gate. The electronic gate is controlled by an auxiliary circuit. In one embodiment, the auxiliary circuit comprises as many voltage comparators as flip-flops in the counter. The voltage comparators enable the electronic gate as long as the states of the flip-flops are different from the desired states. In another embodiment, the auxiliary circuit mainly comprises a divider by N, N being the desired count. In a first step, the divider is reset and the counter is caused to count up to its maximum count and to deliver an overflow pulse when it resets. In a second step starting with the overflow pulse, both counter and divider count up from zero and the electronic gate is closed when the divider reaches the N-count. Lastly, in a third embodiment, the output of the electronic gate is also connected to a down-counter. The counting is stopped when the counter resets and delivers an overflow pulse. Then, at that time, the counter is reset while the down-counter displays the count which was in the counter at the beginning of the preset operation. The down-counter may be connected to a display unit.

REFERENCES:
patent: 3064889 (1962-11-01), Hupp
patent: 3272970 (1966-09-01), Laycak et al.
patent: 3413452 (1968-11-01), Schlein
patent: 3420989 (1969-01-01), Sapp

Affiliated with

Also associated with

Rating

Apparatus for presetting a counter to a given initial count does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for presetting a counter to a given initial count, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for presetting a counter to a given initial count will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1101763