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- 1What does CPU stand for?Central processing unit
- 2What are the three main parts of the CPU?arithmetic logic unit, cache and the control unit
- 3What does ALU stand for ?Arithmetic logic unit
- 4What does RAM stand for?Random Access memory
- 5What is the MAR?The MAR holds the address of the current instruction being executed. The MAR knows the location of the data to be accessed and it keeps track of where that data is located.
- 6What is the MDR?The MDR stores the actual data and holds data that is copied from the RAM.
- 7What does the control unit do?It coordinates and controls all operations carried out by the computer and the Fetch-Decode-Execute cycle/
- 8What is the clock speed?How many fetch-decode-execute cycles the CPU can do per second.
- 9What can you do with more CPU cores?More fetch-decode-execute cycles can be done simultaniously.
- 10What is volatile memory?Memory and data that is deleted once the system shuts down
- 11What does BIOS stand for?Basic input output systems
- 12What does the BIOS do?Its is a ROM (read only memory) that is non volatile and holds the start up instructions or the boot up commands know as the bootstrap.
- 13What is secondary storage?Secondary storage is non volatile storage with the purpose of storing programs and documents etc to be used at a later date. For example: Hard disc drive, SSD, DVD's and USB's.
- 14What are the advantages of an SSD?You can read and write to them very fast in comparison to optical and magnetic, they can come in all different sizes physically and capacity and they have no moving parts so they are less likley to break or be damaged.
- 15What are the advantages of flash memory?Flash memory is cheap and its durable, it can be used for offline deives such as cameras and USB sticks. They are solid, durable and have no moving parts.
- 16What sizes of memory are there?1 bit-holds 2 values 1 or 0
4 bits make a nibble
8 bits make a byte
1000 bytes make a kilobyte
1000 kilobytes makes a megabyte
1000 megabytes makes a gigabyte
1000 gigabytes makes a terabyte - 17What is a network?a network is two or more devices that are connected for communication.
- 18What does WAN stand for?Wide area network
- 19What does LAN stand for?local area network
- 20What is internet protocol?A set of rules that standardies the format of data sent over the internet.
- 21What is an IP address?Each computer has an IP address that uniquely identifies it from other devices on the internet.
- 22What is packet switching?When data is split up into small packets of even size that contian a number and the total number of packets so that the data can take diferent routes to prevent it being blocked and then can come toghthere at the recievers device to construct the data using the numbers.
- 23What does DNS stand for?Domain name system
- 24What does a DNS do?It converts IP addresses to web addresses so you can easily search on the internet and type things such as google.co.uk instead of having to type 74.125.131.94
- 25What are the characteristics of the Von Neumann architecture?Both the program and the data are stored in the same memory.
- 26—
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- Karteikarten am Ohne Titel, erstellt von Harry Billington am 10/07/2019.
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