Asynchronous Counters Electrical Engineering (EE) Notes | EduRev

Digital Electronics

Electrical Engineering (EE) : Asynchronous Counters Electrical Engineering (EE) Notes | EduRev

The document Asynchronous Counters Electrical Engineering (EE) Notes | EduRev is a part of the Electrical Engineering (EE) Course Digital Electronics.
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Asynchronous Counters.

Counters, consisting of a number of flip-flops, count a stream of pulses applied to the counter’s CK input. The output is a binary value whose value is equal to the number of pulses received at the CK input.

Each output represents one bit of the output word, which, in 74 series counter ICs is usually 4 bits long, and the size of the output word depends on the number of flip-flops that make up the counter. The output lines of a 4-bit counter represent the values 20, 21, 22 and 23, or 1,2,4 and 8 respectively. They are normally shown in schematic diagrams in reverse order, with the least significant bit at the left, this is to enable the schematic diagram to show the circuit following the convention that signals flow from left to right, therefore in this case the CK input is at the left.

 

Asynchronous Counters Electrical Engineering (EE) Notes | EduRev

 

Asynchronous Counters Electrical Engineering (EE) Notes | EduRev

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