Counter Help

[erny]

I have been given the task of designing a gear indicator for a car with paddle gear shifts. Basically there will be a 7 seg display for gear number and two inputs from the 2 paddles, (one for up a gear and one for down). My problem is two build a circuit that counts up or down but only has two inputs one for up and one for down.

Any suggestions greatly appreciated.

 

[FRIED]

Google CD40192,193, 74xx192,3

 

[FRIED]

Re PM. The '192 is a BCD counter with separate up and down clocks.
The '193 is binary They are available in CMOS (CD40xxx) and 74HCxxx,
so putting 74HC192 into google gets you:
https://www.alldatasheet.com/datasheet-pdf/pdf/PHILIPS/74HC192.html Click on the link at the bottom of the page.

 

[FRIED]

And I forgot to mention this one:
https://www.alldatasheet.com/datasheet-pdf/pdf/TI/CD40110.html