Unit 1 Lesson 3: Memory
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- Created on: 19-04-19 14:55
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- UNIT 1 LESSON 3: MEMORY
- RAM
- Random Access Memory
- computer stores running programs
- access to RAM is very fast
- can be read from and written to
- when computer turns off, RAM is cleared
- too much RAM, go to hard disk
- RAM is volatile
- RAM is volatile
- Random Access Memory
- ROM
- Read Only Memory
- BIOS chip in ROM tells the computer how to start up
- BIOS = Basic In Out System
- ROM chips tell the compute to BOOT
- operating system is loaded from HDD into RAM
- data permanently held, even when the computer is turned off
- ROM is non volatile
- read only
- BIOS chip in ROM tells the computer how to start up
- Read Only Memory
- Virtual memory
- essentially an extension of RAM
- space on a hard disk that is used as RAM. it is then transferred back to RAM when it is being used
- OS
- Operating System
- when you switch on your computer, the startup instructions load the Operating System from your hard disk into RAM
- Operating System
- Flash Memory
- read and write
- non volatile
- used as secondary storage in desktops and phones
- RAM
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