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THE MEMORY ELEMENTS

THE MEMORY ELEMENTS. Words in high-speed memory. Read-write random-access memory. The Memory Units. 1 b – 1 bit 1 Kb = 1024 (2 10 ) b – 1 kilobit 1 Mb = 1024 (2 10 ) Kb = 1048576 (2 20 ) b – 1 megabit 1 Gb = 1024 (2 10 ) Mb = 1073741824 (2 30 ) b – 1 gigabit

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THE MEMORY ELEMENTS

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  1. THE MEMORY ELEMENTS

  2. Words in high-speed memory

  3. Read-write random-access memory

  4. The Memory Units • 1 b – 1 bit • 1 Kb = 1024 (210) b – 1 kilobit • 1 Mb = 1024 (210) Kb = 1048576 (220) b – 1 megabit • 1 Gb = 1024 (210) Mb = 1073741824 (230) b – 1 gigabit • 1 Tb = 1024 (210) Gb = 1099511627776 (240) b – 1 terabit • 1 byte = one 8 bit word (a sequence of 8 bits at the same address) • 1 B – 1 byte • 1 KB = 1024 (210) bytes – 1 kilobyte • 1 MB = 1024 (210) KB = 1048576 (220) B – 1 megabyte • 1 GB = 1024 (210) MB = 1073741824 (230) B – 1 gigabyte • 1 TB = 1024 (210) GB = 1099511627776 (240) B – 1 terabyte

  5. Basic static memory cell

  6. Linear-select SRAM

  7. Decoders

  8. Decoderscondt

  9. Decoderscondt

  10. Two-dimensional static memory cell

  11. Two-dimensional memory organization

  12. Two-dimensional memory organization condt

  13. Comparison of numbers of electronic elements used in one-dimensional and two-dimensional systems of memory

  14. Bus for computer system

  15. IC package of RAM chip

  16. Interfacing chips to a bus

  17. Layout for adding memory to a bus

  18. Another IC package of RAM chip

  19. Dynamic random-access memories

  20. DRAM timing signals in normal and paging mode operation

  21. Read-only memories

  22. Read-only memories condt

  23. Types of read-only memories MROM (Eng. Mascable ROM) PROM (Eng. Programmable ROM) EPROM (Eng. Erasable and programmable ROM) EEPROM (Eng. Electricallyerasable and programmable ROM) An important application of EEPROM: Flash-BIOS

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