NATIONAL UNIVERSITY OF

MODERN LANGUAGES

GROUP MEMBERS

1. Manal Sarfraz 2. Rizwan Pervaiz3. Nida Dilawar4. Adeela 5. Iqra Aslam 6. Shahwaiz Iqbal

CENTERAL PROCESSING UNIT

AND

STORAGE DEVICES

CENTERAL PROESSING UNIT

The central processing unit (CPU) is the portion of a computer system that carries out the instructions of a computer program, to perform the basic arithmetical, logical, and input and output operations of the system. It 

acts as the BRAIN of computer.

HISTORY

The first CPU was made in the 1940s and was run with the first computer the EDVAC(Electronic Discrete Variable Automatic Computer)

The EDVAC was one of the first functional electronic computer.

FUNCTIONS OF CPU

It handles all the instructionsControl all the operationsControl all the instruction & calculationIt dose fetch , Decode, Execute and store the data

ProcessorsA device that processes something.

Single Core

Dual Core Quad Core

Single CoreSingle core CPUs are the oldest type of computer CPU 

It can only start one operation at a time, so they were not very good at multi-task.

Although only one operation could be started at a time, another one could be activated before the first one was finished but with each new operation the computer would run more slowly.

Dual Core

A dual core CPU is a single CPU that has two cores and thus functions like two CPUs in one.

It can handle multitasking much more efficiently

Dual core CPUs are faster than single core

Quad CoreQuad Core CPUs are a further refinement of the multi-core CPU design and features four cores on a single CPU.

These types of CPUs are useful for people that need to run a lot of different programs at the same time as well as gamers.

Just as dual core CPUs could split the workload between two cores, quad cores allows for even greater multitasking.

PARTS OF CPUMicroprocessorMotherboardVideo cardLAN cardRandom access memory (RAM)Compact Disk Read Only Memory (CD ROM)

WHAT IS MOTHERBOARD?1.A motherboard is one of the most essential parts of a computer system.2.  The base of a motherboard consists of a very firm sheet of non-conductive material, typically some sort of rigid plastic.3. A bus is a communication path on the motherboard that links major components together.

WHAT ID MICROPROCESSOR?1.It holds info about the operating system of the computer.2.Its speed is measured in megahertz3.The microprocessor is a multipurpose, programmable device4. that accepts digital data as input, processes it according to instructions stored in its memory, and provides results as output

WHAT IS RAM? Random Access Memory is also known as the computer’s system memory. It needs power to be read; hence, when a computer turns off, the memory is lost

WHAT IS VIDEO CARD? A LAN Card or Network Interface Card is also an expansion card. Also known as the modem, it helps the computer to connect to another computer on a Network.

Video card is an expansion card that is connected to

the motherboard. It  serves as the visual link between the user and its computer, allowing the user to view and manage the computer’s software data.

Storage devices

A piece of computer equipment on which information can be stored.

OR

Storage Devices are the data storage devices that are used in the computers to store the data.

STORAGE DEVICES

TYPES OF MEMORY

Primary Memory

Secondary Memory

FUNCTION OF MEMORY

Primary Memory

Generally smaller in size, designed to hold data temporarily internal to the computer. fastest data access speed, include RAM and cache memory.

TYPE OF PRIMARY DEVICE

RAM (Random Access Memory)

ROM (Read only Memory)

TYPES OF MEMORYSecondary Memory

large storage capacitystore data permanentlyinternal and externalinclude the hard disk, compact disk

drive and USB

Hard disk Hard disk is a device used to store and

retrieve information using one or more rigid rapidly rotated disk with magnetic material.

There are two types of Hard Disk Drive:1. SSD (Solid State Drive)2. HDD (Hard Disk Drive)

Hard Disk Drive Types

Pros and crons of SSD

Pros: High efficiency Silent Powerful Life timeCrons: Data loss on failiuer Costly Capacity

Pros And Crons Of HDD

Pros: Further dependent on RPM “5400 72000 and

1000” Data recovery Capacity CheapCrons: Power comsumption Heat produced Life time Noise

Floppy disk Floppy disk is a flexible removable

magnetic disk, typically encased in plastic cover. Used for storing data.

Universal serial bus(USB)

USB is one of the best invention in storage devices. It is portable. we store data in lot off amount.

Thank you