Find my level

Already know some RTL? Try these five questions to see where to start.

If you're new to digital design, start with the basics instead. You don't need to answer these first.

Quick check

Where should you start?

Question 1 of 5

In a clocked process, a gets b and b gets a, both with nonblocking assignments. What happens on the clock edge?

Both end up holding the old value of aThey swap valuesThe second assignment wins, so both hold the old value of b

Check answerHintShow answer

Where to go next

• Not sure what changes on a clock edge? Start with registers, then try counters.
• Got caught by the bit width? Review types and conversions.
• Want to write some RTL? Build the tagged buffer.
• Stuck on the timing calculation? Try the setup and hold questions.

You can jump to any topic and come back if you get stuck.