Basic Computer Hardware Troubleshooting

Sir Tom taught us about Basic Computer Hardware Troubleshooting.

Common PC Problems:
1,No Internet Connection
2.Blue Screen of Death
3.Input/Output devices are not working
4.No Screen Display
5.Computer is not working and produces beeping sound

Generations of Computers

Sir Tom taught us about Generations of Computers.

1st Generation -Vacuum Tubes

2nd  Generation -Transistors

3rd  Generation -Integrated Circuits

4th  Generation -Microprocessors

5th  Generation -Artificial Intelligence

Machine Cycle-Networking

Sir Tom taught us about Machine Cycle.


Sequence of Machine Cycle:
1.Fetch
2.Decode
3.Execute
4.Store

Networking-interact with other people to exchange information and develop contacts, especially to further one's career.

1.LAN- Local Area Network
2.MAN-Metropolitan Area Network
3.WAN-Wide Area Network
4.WLAN-Wireless Local Area Network
5.CAN- Campus Area Network
6.SAN-Storage Area Network
7.PAN-Personal Area Network
8.System Area Network

Data Representation

Sir Tom taught us about Data Representation.
Digitizing-the process of taking information and converting it into its binary form.
Bit-smallest unit of data that a computer uses
Byte-8 bits.Is equal to 1 character.

Technologies for storing Binary Information:
1.Magnetic
2.Optical
3.Electronic

Example:

Conversion:
1.Decimal to Hexa-Decimal
2.Decimal to Binary
3.Binary to Hexa-Decimal
4.Binary to Decimal
5.Hexa-Decimal to Decimal
6.Hexa-Decimal to Binary

Data Cycle

Sir Tom taught us about Data Cycle.

Composed of:
1.Input Device
2.RAM(Main Memory)
3.Central Processing Unit
4.Output Device