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Magnetic (disk and tape), physical (punched tape and cards), optical (CD, DVD, and holograms), and semiconductor (RAM and Flash) technologies are described, together with examples of numerous experimental approaches that were tried and found wanting.
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Random-access memory (RAM; /ræm/) is a form of electronic computer memory that can be read and changed in any order, typically used to store working data and machine code.
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Plan projects on a visual timeline
Map milestones, phases, deadlines, and key events in one place so the sequence is easier to see and share. Timetoast is a timeline maker for work, school, research, and stories.