Home of real teaching & learning
  • Full support for teachers
  • Focus on critical thinking
  • Engaging classroom activities
  • Integrated student eBook
  • Assessed tasks / qBank
  • Practice exam questions
Find out more Download brochure

The InThinking Guarantee: Our sites are written by expert practitioners and not by AI

See our AI policy

Disclaimer: InThinking subject sites are neither endorsed by nor connected with the International Baccalaureate Organisation.

Don't miss out, find out!

A1.2.5a Worksheet Answers

Q1. Z = (A + B̅)·C Three gates. Trace table (using the Q1 diagram) The intermediate columns show the values students should have written on each wire. Q2. Z = NOT(A·B) + C Two gates. An AND gate followed by a NOT gate is also correct, but the NAND is the single gate the hint points to. Q3. Z = A̅·B + A·B̅ Five gates. A and B each feed both a NOT gate and an AND gate, so a solid dot is needed at each split. Note for...

Help