hi, everyone
i have a project to handin next week , but i still don't have any idea yet how to start this project. i 've to make a digital timer which count from 0.1 second up to 99.9 second, and use 3 seven segment display.
I have to create that using those below:
- 22V10 PLD chips and program in VHDL
- 3 x LED seven segment display (common Cathode)
- 555 timer (provides the clock signal 0.1 second)
- Resisters and capacitors etc. (general electronics components)
or
- 3 x LED seven segment display (common Anode)
- 3 x 74LS47 TTL chips (seven segment display driver)
- 3 x 74LS190 or 74LS90 (decade counter)
- 1 x CD4093 (NAND Schmitt Trigger)
- 555 timer (provides the clock signal 0.1 second)
- Resisters and capacitors etc. (general electronics components)
Can anyone please roughly show me what my circuit should look like, Diagram would be very good
Thank you every much
i have a project to handin next week , but i still don't have any idea yet how to start this project. i 've to make a digital timer which count from 0.1 second up to 99.9 second, and use 3 seven segment display.
I have to create that using those below:
- 22V10 PLD chips and program in VHDL
- 3 x LED seven segment display (common Cathode)
- 555 timer (provides the clock signal 0.1 second)
- Resisters and capacitors etc. (general electronics components)
or
- 3 x LED seven segment display (common Anode)
- 3 x 74LS47 TTL chips (seven segment display driver)
- 3 x 74LS190 or 74LS90 (decade counter)
- 1 x CD4093 (NAND Schmitt Trigger)
- 555 timer (provides the clock signal 0.1 second)
- Resisters and capacitors etc. (general electronics components)
Can anyone please roughly show me what my circuit should look like, Diagram would be very good
Thank you every much