This section provides an overview for counter ics as well as their applications and principles. Also, please take a look at the list of 3 counter ic manufacturers and their company rankings.
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A counter IC is a type of logic circuit that counts the clock input to a counter IC and outputs the result.
There are binary counters and decimal counters, depending on the format of the output data; a binary counter outputs the output in binary, while a decimal counter outputs the output in decimal.
The logic circuit that makes up a counter IC uses a D-flip-flop. Since this logic element has the function of storing one bit of information, various counter ICs are made by combining this element.
The output from counter ICs are connected to a decoding device, which in turn is connected to a 7-segment LED or similar device to display a numerical value that we can visually understand.
Alternatively, the output is directly connected to a system controller for device control, such as a microcontroller, without passing through a decoding device, and is decoded internally, and then stored with other processing results or transferred to other devices.
Counter ICs consist of clock pin (CLK), a data input pin (D), a data output pin (Q), and its inverted output (Q: inverted).
The D flip-flop is a logic element that outputs the data input to the D pin directly to the Q pin at the timing of the valid (rising) edge of the clock, with the Q (inverted output) directly connected to the D pin and the Q output input to the D pin of the next stage D flip-flop. By connecting the N stages in series, a binary counter with a power of 2 to the Nth power is created.
Also, by connecting the D flip-flops between the terminals as described above, the output of the data input to the D terminal can be viewed as being divided by one-half. This means that the frequency of the output clock is halved relative to the frequency of the input clock.
This function allows counter ICs to be used to create a frequency divider.
In the case of a 4-bit binary counter, the output frequency is 1/16 of the input clock frequency, since 2 to the fourth power = 16.
In the case of an 8-Bit binary counter, the frequency can be divided by 1/256 of the input clock frequency, since 8 to the power of 2 = 256.
*Including some distributors, etc.
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