designing a stop watch
the full descibtion is on the pdf file
The important part is that we will be given a crystal of [url removed, login to view] and we need to use the ripple counter to divide the frequency down to 10Hz.
Some parts we are given are a little different to that page.
HEF4060BP - 14 stage ripple carry binary counter/divider.
HEF4518BP - Dual BCD counter. (Two of these)
MC14543BCP - BCD to 7-segment decoder.
CD4508BE - Dual 4-bit latch.
ATF16V8CZ-15PU - PLD
The other main point is, we are only allowed to use one BCD to seven segment latch decoder chip.