Karteikarten
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Karten in diesem Stapel (9)
- 1what is a microprocessor?Microprocessor
A microprocessor is also known as the Central Processing Unit (CPU). All the main calculations a computer makes are done using the processor. The processor is built onto a single chip. - 2what is a chip?Chip
This is the common name for an integrated circuit. It is small and usually made of silicon. It is used to send electronic signals. - 3what is a main memory?Main memory
A running program is stored along with its data in the main memory of the computer.
Main memory is divided up into storage locations each with its own address.
A single storage location can hold one or more bytes of information. - 4what are RAMs and ROMS?RAM and ROM
There are two different types of memory: RAM and ROM
RAM or Random Access Memory is volatile. This means that when the computer is switched off all the contents of the RAM are lost
ROM or Read Only Memory retains all of its information even when the computer is switched off - 5what is backing storage?Backing storage
Backing storage is used for permanent storage of programs and data.
Hard disks and USB flash drives are common forms of backing storage.
Magnetic tapes are used in large commercial organisations to store long term data. Backup copies are often held on tape.For more information on backing storage, read the revision bite on Current backing storage devices. - 6what is a desktop?Types of computer
Desktop
This type of computer tends to be in one location, e.g. on a desk, in a workplace. They usually have more memory, larger hard disks, better graphics and larger screens than most laptops or notebooks. - 7what are laptops and notebooks?Laptops and notebooks
Laptop computers use an LCD/TFT screen, a keyboard and all other input and output devices in the base. They typically use a track pad or a raised button to control the pointer on the screen instead of a mouse. They are battery operated, with rechargeable power packs. - 8what is a palmtop?Palmtop
A palmtop computer is small enough to be held in one hand while it is being used. For this reason a palmtop computer is also called a handheld computer or a personal digital assistant (PDA). - 9when is a palmtop used?an LCD screen
limited processing power
main memory
backing storage
rechargeable batteries
Palmtop computers are frequently used in business for:
keeping schedule calendars
address book storage and retrieval
note taking
doing calculations
exchanging email and retrieving information from the internet (using a modem).
A microphone is often provided for voice recording.
Information can be input using an on-screen keyboard or by using a stylus on a touch sensitive screen.
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- Karteikarten am Ohne Titel, erstellt von lakdam14 am 17/05/2016.
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- lakdam14 · Mai 2016
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- 18 Mai 2016
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