Computer science

05/10/2023

03/11/2020

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👉 External and Internal Computer Components Wait for us soon.....

03/11/2020

External and Internal Computer Components
Internal Hardware
1. Motherboard-Contains all of the connections
that allow the carious other subsystems to interact.
2. Central Processing unit (CPU)-The components that performs all calculations and
mathematical manipulations in a computer.
3. Read Only Memory (ROM)-The memory that
computers use to store data and instructions
needed by the CPU for computer operation.
4. Disk Drive-Allows a computer to play CD’s or
DVD’s.
5. Battery-The battery allows your computer to
function. Without a battery you would not be able
to turn on.
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6. Processor-The brain of the computer system.
7. Cables-The cables connect every electronic
device together to connect the circuit and allow
everything to work.
8. Fan-The fan is a device that helps your
computer cool down a lot easier by blowing around
the air in your laptop.
9. Heat sink- Necessary to have a CPU cooler.
Without it, your CPU will quickly burn itself out.
10. Modem-Connects hardware and signal.
11. Video card-Deals with PC gaming and high
definition video and multiple displays.
12. Hard Drive-The primary method of storage in
all desktop computer systems.
13. USB port-The USB port allows you to plug in
another device that has a USB out and connect it to
your computer.
14. Ethernet port-a system connecting a number of
computer systems to form a local area network.
15. Serial Port-A connector by which a device that
sends data one bit at a time may be connected to a computer.
16. Random Access Memory-The most common computer memory.

03/11/2020

External Hardware
1. Microphone-Listens and captures or amplifies sound.
2. Webcam-Allows user to capture video or screenshots ofthemselves.
3. Monitor-Displays information for user on a desktop computer.
4. Screen- Displays information for the user on a laptop screen.
5. Keyboard-Lets the user type information.
6. Computer-An electronic device for storing and
processing data.
7. Speakers-Project sounds on the computer.
8. Mouse-Allows the user to move the cursor on the computer.
9. Ports-Allows the user to plug in things to the computer to connect certain devices.
10. Power Supply-The charger for the laptop that
allows the user to charge their computer. This puts
more battery power into the computer so that it can
last longer.

03/11/2020

How the CPU works
Arithmetic logic unit. The arithmetic logic unit (ALU) performs the arithmetic and logical functions that are the work of the computer. ...
1.Instruction register and pointer. ...
2. Cache. ...
3. Memory management unit. ...
4. CPU clock and control unit. ...
5. Random access memory (RAM) ...
6. Supercharging the instruction cycle. ...

03/11/2020

What is Memory?
➯ The essential component of the computer is its Memory. It is assembled on the motherboard as it
is a storage device used for storing data and
instructions for performing a task on the system.
➯ A memory is used to store data and instructions. It is the storage space in a computer, where data is
to be processed and all the instructions are stored
that are required for processing. In simple words, it works just like a human brain where we can store memories.
Storage devices are hardware devices that are
capable of storing and fetching data. Hard drives or optical discs are an example of such storage
devices.
➯ Without memory, the computer can't perform a
single task.
👉 Types of computer memory There are three types of memories:
1. Primary memory
2. Secondary memory
3. T

01/11/2020

don't do this at home

01/11/2020