help with 4x4 keypad

[Ryuusei]

hi guys, im trying to create a calculator for our project using multisim. im almost done with all the operations and now whats left is using the keypad. can someone help me build a functioning keypad without using microcontrollers? i was able to make one but there seems to be some problems with it. help pls.

[Fernando_D]

Hi there,

Click here to open a previous post with a similar question.

Regards,

[jk0001]

can you list out all the IC u used for me, as i had no ideas to make it......