Across
- 5. Measured in Hertz, the _____ is the frequency at which the internal _____ generates pulses. The higher the _____rate, the faster the computer may work. The “_____” is the electronic unit that synchronises related components by generating pulses at a constant rate.
- 6. Simple another term used to refer to Random Access Memory (RAM) which is: Volatile (data lost when power is off) Read and write. Purpose: temporary store of currently executing instructions and their data. E.g. applications and the operating system in use.
- 8. Non-volatile (data retained when power is off) Read only. Purpose: stores instructions for starting the computer called the bootstrap.
- 9. Any program, routine or procedures (together with their associated documentation) that can be run on a computer system.
- 10. logical operator used within a program. ___ works by returning FALSE if the input is TRUE, and returning TRUE if the input is FALSE.
- 11. Memory in the processor providing fast access to frequently used instructions and data.
- 13. Often known as a Central Processing Unit (CPU), it is the main part of the computer, consisting of the registers, ALU and control unit.
- 15. Decodes instructions. Sends signals to control how data moves around the CPU.
- 20. Remote servers that store data that can be accessed over the internet. Advantages: Access anytime, anywhere from any device. Automatic backup. Collaborate on files easily."
- 22. Measured in Hertz, is the frequency at which the internal _____ generates pulses. The higher the _____ rate, the faster the computer may work. The “_____” is the electronic unit that synchronises related components by generating pulses at a constant rate.
- 23. General term covering all computer programs.
- 26. Hard disk drive. Use: operating system and applications. High capacity. Medium data access speed. Low portability (except for portable drives). Reliable but not durable. Medium cost.
- 27. A systems program that performs some specific task in the operation of the computer, for example file backup, virus checking or a compression program.
- 28. Volatile (data lost when power is off) Read and write. Purpose: temporary store of currently executing instructions and their data. E.g. applications and the operating system in use.
- 30. Any hardware device that deals with accepting data from a computer.
- 31. A computer which has been built to solve a very specific program and is not easily changed. For example the operating system placed inside a washing machine, microwave or set of traffic lights.
- 32. A notation used in Boolean algebra for defining the output of a logic gate or logic circuit for all possible combinations of inputs.
- 33. Specialised software that communicates with the hardware of a computer to allow other programs to run.
Down
- 1. Performs calculations e.g. x = 2 + 3 and logical comparisons e.g. IF x > 3 in the CPU.
- 2. A part of a multi-core processor. A multi-core processor is a single component with two or more independent actual CPUs, which are the units responsibly for the fetch-decode-execute cycle.
- 3. All physical parts of a computer system and its related devices both internal or external .E.g. Motherboards, hard drives, RAM as well as monitors, keyboards, mice and printers.
- 4. The main part of the computer, consisting of the registers, ALU and control unit.
- 7. A logical operator used within a program. ___ works by returning FALSE if the input is TRUE, and returning TRUE if the input is FALSE.
- 12. The complete process of retrieving an instruction from store, decoding it and carrying it out. Also known as the instruction cycle.
- 14. a diagrammatic form using a set of standard symbols representing the various Logic Gates
- 16. A logical operator used within a program. ___ works by only returning TRUE if both values being compared are TRUE.
- 17. Memory cards & solid state hard drive (SSD). Use: digital cameras and smartphones. Medium capacity. High portability. Reliable and durable. No moving parts. Fast data access speed. High cost.
- 18. Permanent storage of instructions and data not in use by the processor. Stores the operating system, applications and data not in use. Read/write and non-volatile.
- 19. Traditional computer architecture that forms the basis of most digital computer systems. Instructions are fetched, decoded and executed one at a time.
- 21. manages the computer. Usually supplied with the computer. Most common operating systems are Windows, Linux, Unix, MacOS, iOS.
- 24. CD/R, CD/RW, DVD/R, DVD/RW Use: music, films and archive files. Low capacity. Slow access speed. High portability. Prone to scratches. Low cost.
- 25. Simple another term used to refer to Random Access Memory (RAM) which is: Volatile (data lost when power is off) Read and write. Purpose: temporary store of currently executing instructions and their data. E.g. applications and the operating system in use.
- 29. A communication system that transfers data between components inside a computer.