COMPUTER HARDWARE1. Computer System: End user & Enterprises

computing

2. Computer peripherals: Input, Output & Storage

COMPUTER HARDWARE

COMPUTER SYSTEMS: END USER AND ENTERPRISE USER

Computer system is a complete, working computer.

COMPUTER SYSTEMS: END USER AND ENTERPRISE USER

End user:An end-user of a computer system is one who does not

have any significant contact with the developer of the system.

Enterprise Computing:The main objectives of enterprise computing is to

integrated a company`s primary functions (such as production, scales, services, inventory control, and accounting) to improve efficiency, reduce costs, and help managers make key decisions.

TYPES OF COMPUTER SYSTEMS

Different types of computer systems are nowadays available for different purposes according the user needs.

Categories such as mainframe, midrange computers and microcomputers are still used to help us express the relative processing power and number of end user that can be support by different types of computer.

MICROCOMPUTER SYSTEMS

Microcomputers are the most important category of computer systems for businesspeople and consumers.

Some microcomputer are powerful workstation computer (technical workstations) that support applications with heavy mathematical computing and graphics display demands such as computer-aided design (CAD) in engineering, or investment and portfolio analysis in the securities industry.

Some use as network servers.

MICROCOMPUTER SYSTEMS

Network computers: Network computers are low-cost, networked

microcomputers with no or minimal disk storage. User of NCs depends primarily on internet and intranet

servers for their operating system and Web browser, Java-enabled application software, and data access storage.

MICROCOMPUTER SYSTEMS

Information Appliances: Information appliances include wireless PDAs and

internet-enabled cellular and PCS phones. It also include wired, telephone-based home appliances

that can send and receive emails and access the Web.

MIDRANGE COMPUTER SYSTEMS

Midrange systems are primarily high-end network servers and other types of servers that can handle the large scale processing of many business applications.

Although not as powerful as mainframe computers, they are less costly to buy, operate, and maintain than mainframe systems and thus meet the computing needs of many organizations.

MIDRANGE COMPUTER SYSTEMS

MAINFRAME COMPUTER SYSTEMS

Mainframe computers continue to handle the information processing needs of major corporations and government agencies with high transaction processing volumes or complex computational problems.

Examples, major international banks, airlines, oil companies, and other large corporations.

MAINFRAME COMPUTER SYSTEMS

COMPUTER PERIPHERALS

INPUT

OUTPUT

AND

STORAGE TECHNOLOGIES

COMPUTER PERIPHERALS

Peripherals is the generic name given to all input, output and secondary storage devices that are part of a computer system but not part of the CPU.

Peripherals devices are those that are help you to communicate with the Central Processing Unit of a computer systems.

INPUT TECHNOLOGIES

Pointing Devices:

Touch pads mouse

INPUT TECHNOLOGIES

Pointing Devices:

Trackball

INPUT TECHNOLOGIES

Pen-Based Computing:

WristPDA

INPUT TECHNOLOGIES

Speech Recognition Systems:

INPUT TECHNOLOGIES

Optical Scanning:

LCD Scanner

INPUT TECHNOLOGIES

Bar coding to manage inventory:

Bar code reader Bar code

OTHER INPUT TECHNOLOGIES

Magnetic stripe:

OUTPUT TECHNOLOGIES

Video Output:

CRT Monitor

LCD Monitor

OUTPUT TECHNOLOGIES

Printed Output:

STORAGE TRADE-OFFS

o Storage devices are those hardware devices designed to store information.

o These devices are divided into two main types.

1. Primary storage device

2. Secondary storage device

PRIMARY STORAGE DEVICES

They are also known as internal memory and main memory.

These devices holds memory for shorter period of time.

This type of storage is the fastest type of memory in your computer and is used to store data while it's being used.

SEMICONDUCTOR MEMORY

Semiconductor memory is an electronic data storage device

It is often used as a computer memory, implemented on a semiconductor-based integrated chips.

It provides the computer working storage which it needs to process any applications.

Specialized memory help improve computer’s performance.

RAM (RANDOM ACCESS MEMORY):

RAM is the basic type of Semiconductor memory.

It can both read and write, so it is called read/write memory.

It is a volatile memory.

ROM (READ ONLY MEMORY)

ROM is a non-volatile memory and used for permanent storage.

It can be read but not erased or over written.

FLASH MEMORY

It is the newest and most innovative form of storage that uses semiconductor memory.

It is a non-volatile memory.

SECONDARY STORAGE DEVICES

They are also known as external memory and auxiliary storage.

Secondary storage is a storage medium that holds information until it is deleted or overwritten regardless if the computer has power.

MAGNETIC DISKS

They are the most common form of secondary storage for computer system.

They provide fast access and high storage capacities at a reasonable cost.

TYPES OF MAGNETIC DISKS

There are several types of magnetic disks. But the two main types are:

Floppy Disks Hard Disk Drives

MAGNETIC TAPES

Magnetic tape is still being used as a secondary storage medium in business applications.

Magnetic tape devices include tape reels and cartridges in mainframes and mid-range systems.

It can hold more than 200 mega bytes.

OPTICAL DISKS TECHNLOGIES:

CD-ROM: DVD-ROM:

Primary Storage

Secondary Storage

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Note how cost increases with faster access speeds but decreases with the increased capacity of storage media

NEW AMAZING FUTURE COMPUTER

COMPUTER IN 2020

DOMINANT ORIENTED STRATEGIC TEAM-MATE

Huzaifa Tariq 4107 Arslan Ashraf 4119 Sheikh Waleed 4240 Hamza Tariq Khan 4122 Osama Hamid 4130