Mainframe Computers Have Very Powerful Processors Computer Science Essay

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The role of computer system varies according to the functions it is used for. Consider about the different employees with various responsibilities. Identify the different official responsibilities or tasks which are being performed by those employees using their office computer systems.

Assume that you are responsible in creating the system design specifications for new office computers. Provide system specifications for the identified employees and students' laboratory while considering different types of computer system which are most suitable for them. Consider the computer input, output and other hardware devices and the necessary software to satisfy the user requirements.

Evaluate the suitability of the above system designing specifications for the given scenario by considering factors such as performance, costs, client requirements, compatibility, capacity, accessibility etc.

Assume that you are going to design a new computer laboratory for the institute. What kind of health and safety issues you have to pay your attention on and how to overcome them? Prepare guide lines to maintain a safety laboratory environment considering the computer ergonomics.

Mainframe computers have very powerful processors and large internal memory. Mainframes are used by large businesses (banks, Companies, universities). Mainframe computers can also multi-task by running more than one program at the same time. This is known as multi-programming and with more memory has become possible on desktop and laptop computers.

Figure

Desktop Computer

A desktop computer is the most common kind of PC. It has so many different hardware devices. Desktop computers cannot be easily moved. Processor, memory, monitor, keyboard mouse hard disk drive, floppy disk drive, CD/DVD drive, speakers are the main components of the desktop computers.

Figure

Laptop or Notebook Computer

Figure 4

Figure A laptop computer is a small, and can easily carry with user. It can be powered by battery or mains power. A laptop computer has a keyboard, trackballs, touch pads or track points. They are needed because laptop computers are often operated in places where it is impracticable to use a mouse. Laptop computer has an LCD or TFT screen and a set of small speakers. People use laptops for working when they are on the move, going to meetings or attending courses. Laptop computers are very easy to use than a desktop computers.

Palmtop Computer or Personal Digital Assistant (PDA)

This type of computer is increasing in popularity, and is often called a Personal Digital Assistant (PDA). A palmtop computer is small. It can carry in the pocket. It can store contact numbers, names and addresses, etc. and also it has e-mail and wireless internet access.Palmtop's have small keyboards and special pen to select icons. We can enter data by writing with the stylus. They are powered by batteries and store their data on removable memory units called flash cards. Word processing, electronic diaries, database and spreadsheet software can run on palmtop computers.

Figure 5

Computer hardware

Figure

A computer contains several major subsystems. We call them computer hardware.

Processor

Processor is the brain of the computer. Processor is the miniature wafers of silicon with tiny integrated circuits and intelligent transistors. C:\Users\Bashi\Desktop\default.jpeg

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Processors are organize into 2 main components,

ALU- Which preforms the real "computing"- add, subtract, multiply, divide, less than greater than.

CU- Which handle internal operations and direct the software instructions.

And also microprocessor has,

Address Bus- send an address to memory

Data bus- sends data to memory or receives data from memory

RD/WR line- tell the memory whether it wants to set or get the addressed location

Clock line- lets the clock pulse sequence the processor

Input Devices

Input devices are used to provide input to the computer that translate words, sounds, images and actions. C:\Users\Bashi\Desktop\6.jpegC:\Users\Bashi\Desktop\5.jpeg

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Output Devices

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Memory

There are 2 types of memory used in PCs.

ROM(Read Only Memory)

This memory is used to store system level programs that should be available to the pc at all times.

Ex:-BIOS program

RAM (Random Access Memory )

Ram is volatile. When the user turn off the power the information stored in memory is lost. RAM is cheaper than ROM. C:\Users\Bashi\Desktop\4.jpeg

Secondary Storage Devices

Secondary storage is used to store data that is not in active use. This is slower than primary storage or internal memory. This is non-volatile.

Types of secondary storage

Optical storage

Floppy disk

Hard disk

Flash memory

Mother board

The motherboard comprises of a processor, provision to fix memory modules, connectors to interface drives, connectors for ports, buses, the chip set ICs and some other components.

Card types

Video cards- it allows to see words on computer screen.

I/O Cards- these are the cards that printer plugs into.

Controller cards

Sound cards

Modems

Memory cards

Interface cards

video capture cards

Buses

Buses are used to connect CPU to all other components. Physically, they are wires on the circuit board which transmit data between different components.

The system bus

I/O buses

Chip set

On the mother board many technologies are glued together. These technologies are integrated on the mother board using controller chips, which are on any mother board.

Popular chip sets

Intel 865G

Intel 915G

Intel 945G express

Intel 965G express

Intel 975G express

Computer software

Suitable computer types, hardware devices, software for "techno" institute.

Lecture

Lecture has to prepare lecture presentations and have to prepare the entire thing what they have to teach student. And also they have to use internet to find details. Considering all their works, suitable hardware and software are,

Computer type: - Desktop computer

Hardware devices: - Monitor

CPU

Mouse

keyboard

Flash memory

Software: - Ms Office

Auto cad

Fire fox

Adobe reader

Virus grade

Accountant

He get the student monthly fees and issue respite. And have to enter student payments and update payments. Keep all records are very important thing. And also for accountant need very powerful security and suitable virus grade to their computers. According to accountant requirements, the most suitable hardware and software are,

Computer type: - Desktop computer

Hardware devices: - Monitor

CPU

Mouse

Keyboard

Printer

Software: - Ms Office

Fire fox

Adobe reader

Virus grade

Front desk officer

All course details are given by them. And they keep all student details. These student details are very important. There for desk officers have to keep courses and student details. Most suitable hardware and software are,

Computer type: - Desktop computer

Hardware devices: - Monitor

CPU

Mouse

Keyboard

Fax machine

Software: - Ms Office

Fire fox

Adobe reader

Virus grade

Student coordinator

Student coordinator has to email class schedule. There for him all ways use internet.

Computer type: - Desktop computer

Hardware devices: - Monitor

CPU

Mouse

Keyboard

Printer

Software: - Ms Office

Fire fox

Adobe reader

Virus grade

IT technician

Computer type: - Desktop computer

Hardware devices: - Monitor

CPU

Mouse

keyboard

Flash memory

Software: - Ms Office

Auto cad

Fire fox

Adobe reader

Virus grade

Centre manager

Computer type: - Desktop computer

Hardware devices: - Monitor

CPU

Mouse

Keyboard

Flash memory

Software: - Ms Office

Fire fox

Adobe reader

Virus grade

Labs

These computers use by students. There for main hardware and software is enough.

Computer type: - Desktop computer

Hardware devices: - Monitor

CPU

Mouse

Keyboard

Flash memory

Software: - Ms Office

Auto cad

Fire fox

Adobe reader

Virus grade

There are 5 kinds of health and safety issues

Computer Health and Safety

Computer rooms should be fully covered and air conditioned

Use UPS and Generators to prevent from power failures

There should be Proper wiring connection and breakdown circuits

Interiors of the Lab - Wall Paint, Floor Carpets, Lights, Tables, Chairs etc…

Play relaxation background music inside the lab

Use a lightning conductor

Fire extinguishers and fire alarms should be placed

Display Proper Notices inside the Lab

Data Health and Safety

Network Health and Safety

Student Health and Safety

REFERANCE

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