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ABSTRACT
ABSTRACT
along with large scale integrated circuit of the development of digital count display technology is also in constant update, replace.The counter is refers to some common timer, and in mathematical subject in the main index of digits on the counter, facilitate student number, understand that the meaning of digital.
The count is one of the most simple basic computing, counter to realize the operation is logic circuit.It is the main index of counter digits, common are three and four.Obviously, 3 digits of counter can show the biggest to 999, the biggest can display to double digits. 9999. display.
The contents of this paper are based on CD4553 around the counter of the overall design of research to launch, and the implementation scheme of timer carries on the analysis, the main complete three decimal count display circuit design, is a function of the reset with reset display circuit.
keywords: count Logic circuit Three digits CD4553
In digital electronic technology application in the most of the
temporal logic circuit, are generally to through the external LCD or the LED screen to
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