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МатематикаВопрос:
3. Complete each sentence by choosing from the following devices: memory stick, hard disk, CDs, DVDs, touch screen, trackball, touchpad, webcam. 1. A _________ is a stationary device that works like a mouse turned upside down. You roll the ball with your hand to move the pointer on the screen.
Ответ:
1. A trackball is a stationary device that works like a mouse turned upside down. You roll the ball with your hand to move the pointer on the screen.
Ответ: trackball
Похожие
- 2. A _________ is a small device that is extremely reliable and fits in the USB port on your computer. It quickly replaced the floppy disk.
- 3. Interactive _________ are used in museums, information centres and Internet kiosks. You use your fingers to point directly to objects on the screen.
- 4. Its function is to store all the files, and software the computer will ever use. Any file or software program used by RAM most likely will come from the _________.
- 5. _________ can only hold up to approximately 650 MB of information. You have to have a special drive to write to them. Otherwise they can only be read from.
- 6. A _________ is found on notebook PCs. You use it by pressing the sensitive pad with a finger.
- 8. CDs and _________ use light (laser) to write and read data on a disk. These long and short pits are then stored or etched on the surface of the disk. They can only be read by laser technology.
- 4. Use the words in the box to complete these sentences. input processing storage output ROM RAM CPU software 1. Computer _________ is the visible or audible result of data processing - information that can be read, printed or heard by the user.
- 2. _________ is a set of instructions, called a program, which tells a computer what to do.
- 3. The _________ is the heart of the computer, a microprocessor chip which processes data and coordinates the activities of all the other units.
- 4. As a scanner, the Sigma-100 can be used to _________ photographs as well as documents into the computer.
- 5. The amount of _________ determines the number of programs you can run simultaneously and how fast they operate.
- 6. The CPU will process data as instructed by the programs you're running. _________ includes functions like calculating, sorting, editing, drawing and searching.
- 7........... is permanent and contains instructions needed by CPU. The BIOS uses it to control communication with peripherals.
