The document discusses the basic components of computer systems. It describes the underlying logical structure of computers and lists the primary components as the central processing unit (CPU), control unit, arithmetic logic unit (ALU), memory (both primary and secondary), input and output devices. It provides details on different types of memory such as RAM, ROM, cache memory. It also explains input methods like keyboards, mice, scanners and output methods like printers, displays.

1. Nita Arora (PGT Comp. Sc.) K.H.M.S.

2. B ASIC C OMPONENTS OF C OMPUTER S YSTEMS Underlying Structure Logical Structure of Digital Computers Secondary Memory

3. B ASIC C OMPONENTS OF C OMPUTER S YSTEMS Input/Output Secondary Memory

10. B ASIC C OMPONENTS OF C OMPUTER S YSTEMS Input/Output Multimedia – relatively new term for computer input and output in the form of text, graphics, sound, still images, animations, and/or video Of interest …

11. B ASIC C OMPONENTS OF C OMPUTER S YSTEMS Computer Memory Secondary Memory

13. Types of Memory ROM RAM SRAM DRAM PROM EPROM EAPROM EAPROM

19. B ASIC C OMPONENTS OF C OMPUTER S YSTEMS Computer Files Secondary Memory (Secondary Storage)

28. Bits and Coding Schemes Figure 2.4 Computer Coding Schemes . . . . . . . . . . . . . . . . . .

29. B ASIC C OMPONENTS OF C OMPUTER S YSTEMS Arithmetic/Logical Unit Secondary Memory

33. B ASIC C OMPONENTS OF C OMPUTER S YSTEMS Control Unit Secondary Memory