Across
- 2. a small plastic disc on which music or other digital information is stored, and from which the information can be read using reflected laser light.
- 5. a machine allowing the creation of a physical object from a three-dimensional digital model, typically by laying down many thin layers of a material in succession.
- 6. a machine for printing text or pictures onto paper, especially one linked to a computer.
- 8. a peripheral (piece of computer hardware equipment) used to provide data and control signals to an information processing system such as a computer or other information appliance
- 11. any external device that provides input and output for the computer.
- 14. an electron tube containing a near-vacuum that allows the free passage of electric current.
- 15. a computer program that operates or controls a particular type of device that is attached to a computer.
- 17. a video camera that inputs to a computer connected to the Internet, so that its images can be viewed by Internet users.
- 19. an instrument or device used for observing, checking, or keeping a continuous record of a process or quantity.
- 20. a movable indicator on a computer screen identifying the point that will be affected by input from the user, for example showing where typed text will be inserted.
- 21. a panel of keys that operate a computer or typewriter.
- 22. a semiconductor device with three connections, capable of amplification in addition to rectification.
Down
- 1. a computer input device in the form of a small panel containing different touch-sensitive areas.
- 3. an electronic circuit formed on a small piece of semiconducting material, performing the same function as a larger circuit made from discrete components.
- 4. an industry standard that establishes specifications for cables and connectors and protocols for connection, communication and power supply (interfacing) between computers, peripherals and other computers.
- 7. a printer in which the characters are formed by minute jets of ink.
- 9. an apparatus that converts electrical impulses into sound, typically as part of a public address system or stereo equipment.
- 10. (of signals or data) expressed as series of the digits 0 and 1, typically represented by values of a physical quantity such as voltage or magnetic polarization.
- 12. a printer linked to a computer producing good-quality printed material by using a laser to form a pattern of electrostatically charged dots on a light-sensitive drum, which attract toner (or dry ink powder). The toner is transferred to a piece of paper and fixed by a heating process.
- 13. a proprietary audio/video interface for transmitting uncompressed video data and compressed or uncompressed digital audio data from an HDMI-compliant source device
- 16. a small handheld device that is dragged across a flat surface to move the cursor on a computer screen, typically having buttons that are pressed to control functions.
- 18. An output device is any device used to send data from a computer to another device or user