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2. A GPS module communicates using TX and RX without a clock wire. Which interface is used?
7. An engineer balances speed, cost, memory and battery life. What process is being performed?
8. A button interrupt immediately executes a special function. What is this function called?
9. Vehicle controllers communicate reliably in a noisy environment. Which bus is suitable?
10. Multiple Cortex-M3 interrupts must be prioritized. Which component handles them?
11. A processor executes a small set of simple instructions quickly. Which architecture does it use?
12. A sensor produces values only between 0 and 255. Which number type is suitable?
14. A battery-powered fitness band needs a low-power ARM processor. Which ARM series is suitable?
17. Wireless earbuds connect directly to a nearby smartphone. Which technology is used?
18. Hundreds of battery-powered sensors form a low-power network. Which technology is suitable?
19. An SD card communicates using MOSI, MISO, SCK and chip-select. Which interface is used?
20. A microwave controller performs only heating and timer operations. What type of system is it?

1. Which microcontroller acts as the brain of the classic Arduino Uno?
3. Cortex-M3 must sleep until an interrupt arrives. Which instruction is used?
4. A digital circuit must be reconfigured after manufacturing. Which technology should be selected?
5. A smart toy needs a chip containing CPU, memory, timers and input-output ports. Which device is suitable?
6. A variable is modified by an interrupt at any time. Which modifier should be used?
13. An RTC, OLED and sensor share the same SDA and SCL wires. Which interface is used?
15. An airbag must activate within milliseconds of a collision. Which characteristic does this demonstrate?
16. Students tap identity cards near a reader to record attendance. Which technology is used?