9I Paper 1

1. – Signal that uses discrete values, usually 0s and 1s.
6. – Software designed to control and manage computer hardware, such as an operating system.
8. – Signal that is continuous and varies smoothly over time.
11. - Register that temporarily stores data being transferred to or from memory.
12. – Uses part of secondary storage (hard disk/SSD) as an extension of RAM to run larger programs.
14. – Error detection method where data is sent back to the sender for verification.
16. – A sensor that emits waves and measures the time taken for the echo to return to calculate distance.

2. – Method used to represent negative binary numbers.
3. – Register used to store results of arithmetic and logic operations.
4. – Hardware device that detects changes in the environment and sends data to a computer system.
5. – A permanent IP address that does not change and is manually assigned to a device.
7. – Error detection technique that adds an extra bit to make the number of 1s even or odd.
9. – Hardware component that allows a computer to connect to a network.
10. – Data transmission mode where data flows in only one direction.
13. – Software designed to perform specific tasks for the user.
15. – Transmission mode where data flows in both directions simultaneously.