� Speed � Accuracy � Efficiency � Versatility � Storing and Retrieving
What are the features of a computer?
Hard Disk, Floppy Disk, Magnetic Tape
Give 3 examples for Magnetic media storage devices?
Give 3 examples for Optical media storage devices?
USB flash drive, Memory card
Give 3 examples for Solid state storage devices?
PS/2 ports, Audio ports , Para ...... rt , RJ 45 port , Serial ports
State 5 examples for computer ports?
Transmitting data and information is called data communication.
What is the data communication?
Sender / Source, Medium, Receiver/ destination
What are the basic components required for data communication?
Simplex Mode, Half- duplex Mode, Full Duplex Mode
What are the 3 ways of data transmission modes?
Guided / Wired, Unguided/Wireless Media
What are the two types of data transmission media?
If the medium used for data tr ...... it is called guided or wired.
What is the Guided / Wired media?
Twisted Pair, Coaxial Cable, Fiber Optics cable
Give 3 examples for Guided / Wired media?
� Super Computers � Mainframe Computers � Mini Computers � Micro Computers
State 4 ways to classify the computer according to physical size
Data is transmitted as signal ...... alled unguided/wireless media.
What is the Unguided/Wireless Media?
Radio waves, Microwaves, Microwaves
Give 3 examples for Unguided/Wireless Media?
Network Interface Card (NIC), ...... Wi-Fi, Router, Modem, Firewall
What are the computer network devices?
Local Area Network (LAN), Metropolitan Area Network - (MAN), Wide Area Network - WAN
States the 3 types of computer networks?
Star Topology, Bus Topology, Ring Topology, Tree Topology, Mesh Topology
What are the network topology
Data and information can be sh ...... d at any time, Electronic mail
What are the advantages of networking?
Possible security issues, Brea ...... k downs, Training requirements
What are the disadvantages of networking?
� Analog Computers � Digital Computers � Hybrid Computers
State 3 ways to classify the computer according to technology
� Input data � Process and store data � Output data
What are the main functions of a computer system?
� Keyboard � Pointing Devices ...... ler Machine - ATM � Microphone
� Monitor/ Screen o Cathode Ra ...... rs o Thermal printers � Sounds
� Arithmetic and Logical Unit (ALU) � Control Unit (CU) � Memory Registers
What are the three main components of the CPU?
The memory that can be directl ...... ly Memory (ROM) o Cache Memory
What is the primary memory of the computer?