Memory
by Alen Peršić
1. Primary
1.1. ROM
1.1.1. permanent
1.1.2. low access time
1.2. RAM
1.2.1. temporary memory
1.2.2. no power=data loss
1.3. connected to CPU
1.3.1. address bus
1.3.2. data bus
2. Secondary
2.1. Flash
2.1.1. USB flash drive
2.1.1.1. small size
2.1.1.2. low price
2.1.2. SD card
2.1.3. SSD
2.1.3.1. low capacity
2.1.3.2. extremly low seek and access time
2.2. Optical
2.2.1. CD-ROM
2.2.1.1. read-only
2.2.2. CD-R
2.2.2.1. writeable
2.2.3. CD-RW
2.2.3.1. rewritable
2.3. Magnetic disk
2.3.1. HDD
2.3.1.1. high capacity
2.3.1.2. slower than SSD
2.4. Magnetic tape
2.4.1. Floppy disk
2.4.1.1. very low capacity
2.4.1.2. outdated
2.5. not accessible by CPU
2.5.1. external devices