1. Computer Terminologies (1) CPU - Central Processing Unit RAM - Random Access Memory ROM - Read-Only Memory CD-ROM drive Floppy disk drive Hard disk drive Bus

2. Computer Terminologies (2) System unit Motherboard (Mainboard) Expansion slot Network Card Video Card Sound Card Parallel port and Serial port

3. An Idealized Computer

4. Information Flow

5. What’s in that box?

6. Network Interface Cards zcommunicate through a serial connection zEach card requires an IRQ, an I/O address, and an upper memory address to work with DOS/WIN95. zTo configure TCP/IP LAN settings in a Windows machine, use the Control Panel icon, Network.

7. Network Interface Cards zConsiderations: ztype of network (Ethernet, Token Ring, FDDI) ztype of media (CAT5, fiber, wireless) ztype of system bus either PCI/ISA or PCMCIA, which is used on laptops) zTo change a PCs network speed from 10Mbps to 100Mbps, you need to upgrade the NIC.

8. NIC: Network Interface Card IRQ I/O address Memory address PCMCIA Personal Computer Memory Card International Association

10. Select a NIC Type of Network: –Ethernet, Token Ring, FDDI Type of media: –Twisted-pair, Coaxial, Fiber-optic cable Type of system bus: –PCI, ISA

11. Information stored in computers Symbols or "bits", are 1 and 0.

12. Data Networks

13. 1 Byte = 8 Bits. Information Unit

14. Numbering System

15. Binary Numbering System

16. Binary Number System Computer systems only understand “ on ” and “ off ” or “ 1s ” and “ 0s. ” Computer systems use a binary numbering system rather than decimal. Decimal numbering system uses 10 symbols; they are 0-9. Computer systems use a Base 2 system. 2727 2626 2525 2424 23232 2121 2020 1286432168421 8 bits = 1 byte A bit is a binary digit used in the binary numbering system, either 0 or 1.

17. Binary Number System

18. The binary number 10010001 in Base 2 = 145. 2727 2626 2525 2424 23232 2121 2020 1286432168421 10010001 (1, 128) = 128 + (0, 64) = 0 + (0, 32) = 0 + (1, 16) = 16 + (0, 8) = 0 + (0, 4) = 0 + (0, 2) = 0 + ( 1, 1) = 1 = 145

19. Binary Number System The decimal number 35 in Base 2 2727 2626 2525 2424 23232 2121 2020 1286432168421 00100011

20. Binary Number System If the right-most digit is odd, then the number is odd. (255) 2727 2626 2525 2424 23232 2121 2020 1286432168421 11111111

21. Binary Number System If the right-most digit is even, then the number is even. (142) 2727 2626 2525 2424 23232 2121 2020 1286432168421 10001110

22. Preparation for LAB 1: Installation of NIC 2: Configuring network settings

23. Q & A