How are you? I wish you are fine. Welcome back to our site www.techdigitaltips.com.
Today we are giving you the surprise gift for New Year 2019 but for getting the gift you must have to please subscribe our site for getting our latest post and Gadgets review.
Basic Computer Structure
Before I explain Basic Computer Structure, I want to explain the definition of computer; it would help in understanding about basic computer structure.
Definition of Computer Hardware
A computer is an electronic machine, operating under the control of instructions stored in its own memory that can accept data (input), manipulate or calculate the data according to specified rules then produce results (output), and store the results for future use. The word “computer” came from an English word “Compute” which means to calculate. This is the reason that the computer is considered as a calculating device ….
So let’s start our topic “Basic Computer Structure”
Logical Structure of computer content are:-
- BIOS (The Basic Input Output System)
- CPU ( Central Processing Unit or Processor)
- Memory / RAM,ROM (Temporary Storage)
- Hard Disk (Permanent Storage)
- Input / Output Device
- Communication Channel (Ex USB, Serial, Parallel etc.)
- Other Add-on Device.
Example of a Computer Structure
Basic Input Output System
BIOS are Non-Volatile firmware used to store all the parameter before the Operating System load; It means to perform hardware initialization during the booting process. It initialize Hard Disk size, Memory speed USB, Serial, Parallel, it also turn on or turn off build in device like printer, scanner etc.
Identify the Component – Processor
Processor handles all the basic instructions, such as processing mouse and keyboard input and running applications.The Central Processing Unit It is the core of a computer. Responsible for all the Calculation usually in the Speed of GHz.
1 GHz equal to 1,000 MHz
In the current market there are several categories of Micro Processors to choose for your desktop computers: Core i3, Core i5, Core i7.Dual Core,Quad Core, Athlon, and AMDX64 etc.
The central processor of a computer is also known as the CPU, or “central processing unit.”
Memory / RAM
Primary Memory (Random Access Memory (RAM)
- It is also called as read write memory or the main memory or the primary memory.
- Random Access Memory Act as a temporary Storage EDO > SDRAM > DDR > DDR2 All data stored in memory are volatile.(Need electricity to keep the data)
- RAM is further classified into two types- SRAM (Static Random Access Memory) and DRAM (Dynamic Random Access Memory).
Read Only Memory (ROM)
- ROM is permanent Storage memory, it is important to operate the system, like the program essential to boot the computer.
- It is not volatile.
- No Change can be done in this memory, Used in embedded systems.
- ROM can also classify into 4 types- ROM, PROM, EPROM, and EEPROM.
Hard Disk (ATA / SATA / SCSI)
This is one of the most important part. Computer can store a huge amount of data in memory and when ever required it can be recalled any time.This data is retained even when the computer is powered off.
In a desktop computer the Hard Drive comes in a standard size of 3.5 inches while a laptop computer contains a smaller 2.5 inch Hard Drive.
The Hard Drive is connected to the motherboard via an interface cable. There are three main types of Hard Drive interface including the older IDE (Integrated Drive Electronics) also called PATA (Parallel ATA), the new SATA (Serial ATA), and SCSI (Small Computer System Interface) which is mainly used on servers.
All types of Hard Drive have their own speed like 4,200rpm / 5,400rpm / 7,200rpm / 10,000 rpm
There are different capacities of Hard Drive example 80GB to 500GB or even 1TB to 4 TB) Small Size Hard Disk is more popular as they are portable size.
The Motherboard is a printed circuit board that allows the CPU, RAM, and all other computer essential components to communicate with each other. It means Provide a platform to connecting all the devices. (Keyboard / Mouse /Power / CPU /Memory / Hard Disk /Floppy Disk / Display Card etc).
The first Motherboard is considered to be used in the IBM Personal Computer, released in 1981.
There are many connections, ports, or slots are on a motherboard
I/O Device & Interface
- ATA /PATA/ SATA /SCSI (For Hard Disk)
- Serial Port (For Communication Modem )
- Parallel Port or LPT Port (For Printer)
- RJ45 Socket (For Network)
- PS/2 (For Keyboard / Mouse)
- VGA /SVGA (For Monitor)
- USB (All compatible device)
A Power Supply unit converts the A.C. Voltage to Lower D.C.Voltage which is suitable for Computer.
Power Supply can be classified by their loading (Watt) and different type of socket for different Computers.
Most modern desktop personal computer power supplies conform to the ATX specification, which includes form factor and voltage tolerances. While an ATX power supply is connected to the mains supply.
I hope it will help you.After going through this lesson you would be able to: proper explain Basic Computer Structure.