Quiz 1 Flashcards
What is Computer Maintenance?
Its the practice of keeping the software & hardware of computers in a good state and shape.
What are the four essential processes that computers perform?
1- Input
2- Output
3- Storage
4- Processing
What is ESD?
Electrostatic Discharge (ESD), means the passage of static electrical charge.
How do we avoid ESD?
By wearing an anti-static wrist strap, and connecting yourself to your computer case.
What does a PC consist of?
1- System unit.
2- Monitor.
3- Keyboard.
4- Mouse.
5- Speakers.
6- Printer.
What was mini-DIN used for?
Mouse & keyboard
What is USB?
Universal Serial Bus
What is USB used for?
Industry standard used for general purpose connection.
What are the 3 different USB sizes?
1- A (Very common)
2- B
3- mini-B (Less common)
What is DB-25?
electrical connector used to connect most of the peripherals devices. (Printer..)
What is RJ-11 for?
Telephone.
What is RJ-45 for?
Network.
What does the Power supply (PSU) do?
Simply supplies the PC components with electricity.
What type of electricity does the PC use?
Direct current (DC).
What are the 2 types of electricity currents?
1- (DC), Direct current.
2- (AC), Alternating current.
What does the Power supply unit (PSU) do to get DC?
Converts AC power to DC, to pass it to motherboard and peripherals.
What is the P1 connector for?
Power connector for Motherboard.
What are the 3 types of power connectors for peripherals?
1- Molex connector (DVD drives).
2- Mini connector (Floppy disks).
3- SATA connector (Hard drives).
What can you use if you don’t have enough connectors?
Use splitters.
How can we test our Power supply unit to see if its functioning?
1- Connect PSU to the motherboard, and connect your wall socket to your PSU (power On/Off).
2- Wire pin 13 & 14 with a wire of the motherboard connector from the power supply side.
