Physics A-Level
BCD counter
What BCD counter means in Physics A-Level, as defined for AQA.
Definition of BCD counter
Check what you remember
Read the wording for your board, then hide it and explain BCD counter in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Counts only from 0000 to 1001 (0 to 9) and then resets, making it suitable for driving decimal displays.
Topics that use BCD counter
- Sequential logic (A-level only) (AQA A-Level)
Related terms
- Asynchronous output changes
- Boolean expression
- Clock
- Clock-edge triggering
- Johnson counter
- Reset input
- Sequential logic circuits
- Timing diagram
Using BCD counter in the exam
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