A computer can be described as ...... d produces the desired output.
Secondary Memory or the Second ...... also called External Storage.
Hard Disk Floppy Disk Magnetic Tape
USB flash drive Memory card
PS/2 ports Audio ports Paralle ...... o port RJ 45 port Serial ports
Transmitting data and information is called data communication.
Sender / Source Medium Receiver/ destination
Simplex Mode Half- duplex Mode Full Duplex Mode
Guided / Wired Unguided/Wireless Media
If the medium used for data tr ...... it is called guided or wired.
Speed Accuracy Efficiency Versatility Storing and Retrieving
Twisted Pair Coaxial Cable Fiber Optics cable
Data is transmitted as signal ...... alled unguided/wireless media.
Radio waves Microwaves Microwaves
Network Interface Card (NIC) Switch/Hub Wireless Fidelity - Wi-Fi Router Modem Firewall
Local Area Network (LAN) Metropolitan Area Network - (MAN) Wide Area Network - WAN
Star Topology Bus Topology Ring Topology Tree Topology Mesh Topology
Data and information can be sh ...... d at any time, Electronic mail
Possible security issues Break ...... ak downs Training requirements
Super Computers Mainframe Computers Mini Computers Micro Computers
Analog Computers Digital Computers Hybrid Computers
Input data Process and store data Output data
Keyboard Pointing Devices ...... eller Machine - ATM Microphone
Monitor/ Screen Cathod ...... Thermal printers Sounds
Arithmetic and Logical Unit (ALU) Control Unit (CU) Memory Registers
The memory that can be directl ...... ly Memory (ROM) o Cache Memory