Maker Pro
Maker Pro

Seven segment display

weihungchew

Jun 17, 2021
2
Joined
Jun 17, 2021
Messages
2
I want to display the hexadecimal number by using a seven segment display. I used 4 bit up-counter and one hexa-to-seven segment decoder, but this only can count from 0 to F. What if I want to display a sequence of hexadecimal numbers without following the ascending order? Is it need to add some other components like encoder or decoder?
 

weihungchew

Jun 17, 2021
2
Joined
Jun 17, 2021
Messages
2
Of course. 4 bit = 0 ... 5 (dec) = 0... F (hex).

This is insufficient information. Please explain in more detail what you want to do.
I want to display the ID number like EEE2596273 using a seven-segment display, the numbers are displayed one by one and each number is displayed for one second
 

Harald Kapp

Moderator
Moderator
Nov 17, 2011
12,713
Joined
Nov 17, 2011
Messages
12,713
  • Easiest with a microcontroller that controls the sequence and duration of each single digit display.
  • A counter to address an EPROM which stores the ID number sequentially is also possible, but imho is more effort than a micro.
  • Instead of an EPROM some glue logic (NAND, NOR etc.) can also be used. A good exercise in Boolean Algebra and minimization theory, but a bit cumbersome. Anyhow, this may be what your instructor expects. Freshen up your knowledge of minimization using Karnaugh-Veitch diagrams and get started.
 
Last edited:
Top