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Simulators
playground, A1.2.1 / A1.2.3 / A1.2.4
Three activities: flip bits and watch the value change, practise conversions, and test six gates in live circuits with truth tables. The reference shows all seven gate symbols. Number systems, Logic gates
Tap a bit to switch it on. Each bit that is on adds its place value (128, 64, 32, 16, 8, 4, 2 or 1) to the total.
All bits are off, so the total is 0.
decimal
0
binary
0000 0000
hex
00
Each group of four bits makes one hex digit.
Streak 0Best 0
Convert each number to the base asked for. Every right answer adds 1 to your streak, and a wrong answer or a skip starts it again. Spaces and leading zeros are fine.
Convert this hexadecimal (base 16) number to decimal (base 10)
10 in base 16, to base 10.
Q is 1 only when both inputs are 1. Fill the Q column, then flip the switches to check your thinking.
try it live
Tap an input to switch it between 0 and 1.
the seven symbols
| A | B | Q |
|---|---|---|
| These inputs match the live switches. 0 | 0 | |
| 0 | 1 | |
| 1 | 0 | |
| 1 | 1 |
Tap a ? cell to set it to 1. Tap again to change it to 0.