SOP, POS, universal gates and timing.
Understand digital circuits with illustrated explanations, worked examples, past-paper discussions and revision questions.
Study sections
Follow the order or choose a sectionFrom SOP to a Circuit — Two-Level Logic
Last week you turned a truth table into a Sum of Products formula. This week you turn that formula into a real circuit you could build…
02Product of Sums (POS) and Maxterms
SOP looks at the rows where the output is 1 . But what if the output is 1 almost everywhere, and 0 in just two rows? Then it’s easier t…
03Universal Gates — Building Everything from NAND or NOR
Imagine a LEGO box with only one kind of brick, yet you can still build anything. NAND gates are like that: with enough NAND gates, you…
04Multilevel Logic and Timing Diagrams
A room has three doors , with a light switch at each one. Flip any switch and the bulb should change: on to off, or off to on. How woul…
05How to Solve Week 3 Exam Questions
“What is the minimum number of gates?” comes in every quiz and end-term. This page teaches the method from zero, then solves every Week…