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5 Cards in this Set
- Front
- Back
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Storage |
The computer memory is a temporary storage area. Main memory ( internal or primary storage) is another name for RAM and ROM. |
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ROM |
ROM ( Read Only Memory ) is used to hold instructions needed to start/ boot up the computer. It is non volatile which means it doesn't lose contents when power is turned off. Main types: * programmable ROM ( PROM ) * erasable programmable ROM ( EPROM ) * electronically erasable programmable ROM ( EEPROM ) |
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RAM |
RAM ( Read Only Memory) holds data, instructions and programs while the CPU is processing it when the computer is on.
Volatile- loses content when power is turned off
The main types of RAM includes : * Static RAM ( SRAM ) * Dynamic RAM ( DRAM ) |
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Memory Units |
BH (binary digit): A binary digit is logical 0 and 1 Nibble: A group of 4 bits Byte: A group of 8 bits that can represent a character Word: A group of fixed number of bits processed as a unit. |
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Storage Units |
1024 bytes - 1 kilobyte 1024 kb - 1 megabyte 1024 mb - 1 gigabyte 1024 gb - 1 terabyte 1024 tb - petabyte |
