Computers: Electronic Counter Circuits - Count Down/Up
Super-cool electronic counter circuits.
When you need an electronic ciruit capable of counting up and down - look no further than these counter circuits and schematics. The circuits performing counting operations in various different ways.
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Complete instructions and circuit diagram for a Geiger counter meter device, which will allow you to measure radiation levels.
Panel Meter Counter
This is a basic low cost counter module. Two or more may be plugged together with 6-pin sockets and harness provided. Excellent use as event counter. Has a single 3-digit display. Uses the 14553 and 14551 chips. Has count and reset switches with debounce
Up/Down Counter Kit
This is a low cost 4 digit Up/Down Counter. Count range is from 0000 to 9999 (counting up) or 9999 to 0000 (counting down).
Presettable Down Counter Kit
This is a low cost 4 digit presettable down counter with output and reset. The count input can be used for both low and high speed applications.
Geiger Counter Kit Radiation Alert Monitor
Radiation Alert Monitor 4 Kit or completed unit Geiger Counter
Count-Down Timer - Relay Output Switch
Timer kits are an ever popular item with the hobbyist. This uses a 555 timer IC and goes from 8 seconds to 8192 seconds.
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