Installing OS

In installing OS, the actions are as follows,

You MUST have an installer..
Know the System Requirements.
Configure BIOS
Install ..

And lastly ENJOY !!

Computer System Unit Components

Here are some :

Motherboard - a printed circuit board containing the principal components of a computer or other devices.
Power Box- electronic device that supplies electric energy to an electrical load.
RAM- "Random Access Memory"
Processor
Hard Disk
SATA Cables
Fan


ETC...

Basic Computer Hardware Troubleshooting

First, the very IMPORTANT thing.....

CHECK THE POWER SUPPLY.. !!

Then, make sure that all hardware are properly connected.
Reboot your computer.
Check the device manager.
Check if all devices or hardware are not broken or damaged.
Test the electrical outlet.


You must do this on some errors like THE BLUE SCREEN OF DEATH ..

Computer Generations

There are 5 :

1st Generation – Vacuum Tubes
2nd Generation – Transistor
3rd Generation – Integrated Circuit
4th Generation – Microprocessor
5th Generation – AI or Artificial Intelligence.

Machine Cycle

It is also called processor cycle. It is the basic operation performed by the main logic unit of the computer which is the CPU.

The machine cycle has 3 steps :

1. Fetch
2. Decode
3. Execute
There is another step which is "Store".





Networking

Network - is a group of two or more computer systems linked together.
Packet - is the unit of data that is routed on a network.

There are different types of network :
Some are WAN, MAN, LAN, WLAN ,etc.


In data representation, data are represented as electromagnetic signals such as an electrical voltage, radiowave, etc.

Conversion

Actually, conversion on BIN/DEC/HEX.

BINARY – DECIMAL [Positional Notation]
DECIMAL – BINARY [Division by Two with Remainder]

BINARY- HEXADECIMAL [4 bits = 1 hex digit]
HEXADECIMAL – BINARY [1 hex digit = 4 bits]

DECIMAL – HEXADECIMAL [Dec-Bin-Hex][ /16 ]
HEXADECIMAL – DECIMAL [Hex-Bin-Dec] [Place Values]

Binary

Binary means "composed of two parts".
A binary number is a representation for numbers using only two digits (0 and 1)
It is also called "base-2"

Binary

Data Representation

First..

SOURCES of Data :

1.Original
2.Previously stored

Digitizing is taking data and convert it into BINARY form for the computer to understand.

Somethings for storing BINARY data :
-Optical
-Electronic
-Magnetic

Bit is the smallest unit of data that a computer uses.
4 Bits = 1 nibble
8 bits = 1 byte
Information move into computer in bytes or on multiple bytes which we call "words".


IMPORTANT characteristics of storage devices
-Speed Time
-Cost
-Capacity
-Type of Access

Software

Software is the instructor of the CPU.
It tells the computer what to do.

There are two types : System.ystem & Application Software
They differ of their uses.

Platform is defined by a processor and an operating system.
Some softwares can't be run on some platforms.

Computer System

Computer System

As I've learned, it has 3 works. "INPUT,PROCESS and OUTPUT"
It is with hardwares and softwares.

There are 3 types of Computer : DIGITAL,ANALOG and uhmm.. HYBRID
Digital Computers are divided into 4 groups : Micro, Mini,Mainframe and Super Computer.

Hardware Specs and System Requirements

I could describe hardware specs using a word : "CAPABILITY"
It is different to System Requirements

System Requirements is also hardware specs to be able to run a particular computer software but minimum.

That's all.. :)