Half four-bit LED counting circuit

Published:2011/4/21 21:42:00 Author:Nicole | Keyword: LED counting | From:SeekIC

It is a CMOS half four-bit decimal counter, it has counting, latching, bit by bit scanning output circuit, protection circuit. The scanning speed can be changeable, it only needs to change a external capacitor. The power supply is 3~10V, the static power consumption is lower than 1mA, the counting frequency range is from DC to few MHz, it adopts DIP-16 foot in-line package. The count pulse is coupled to input DG6010 count by high speed photodiode isolator SL950. 6010 sends out BCD code then transformed 7 phase drive singal by CC4511B, the singal is added to 4 bit LED to display. This counting circuit is used as faceplate counting for all kinds of instruments, such as range counting, product counting, flux counting, timing and so on.



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