components of computer system and input-output devices and storage devices
DESCRIPTION
Components of computer system and input-output devices and storage devicesTRANSCRIPT
WELCOME TO THE PRESENTATION SESSION
Computer in Business
GROUP 2
CHAPTER 2
Name Id Topic
Rayhan Ibn Ali 13037425
Components of computer system
Md. Sohag Hossain 13087430
CPU-Control unit
Md. Rubel Hossen 13087440
CPU-Arithmetic logic unit
Md.Mukter Hossain 13047447
Operation perfomed by CPU
Sabbir Hossain 13087455
Input devices
Md. Saiful Islam (Group leader)
13067472
Output devices
Jubayer Hossian 13107489
Memory & storage devices(RAM)
Md. Rasel Mahmud 13107497
Memory&storage devices(ROM,EPROM, Flash memory, hard disk drives)
Soumen Chakrabarti
13117504
Processing devices(micro processors)
Md. Juel Rana 13067508
Advantages of computer in personal life & business
RAYHAN IBN ALI
ID -13037425
Components of computer system
The processor :MotherboardBusCardsPortsMemoryHard disk driveFloppy disk drivePower supply unit
The Memory: Primary memory Secondary
memory Input Devices:
Key board Mouse Floppy disk Scanner Micro-phone Code reader
Output Devices Monitor V ideo display
Printer Projector Plotter
Disk Storage : Hard disk ROM Floppy disk Pen drive Compacted disk
Programme : System programme Application programme
MD. SOHAG HOSSAIN
Id-13087430
TOPIC: CPU- CONTROL UNIT
A component of a computer's central processing unit
Control unit
Implementing the instruction set of the CPU. Performing the tasks of fetching, Decoding, Managing execution Storing results. Transferring data to ALU.
& Finally, carry out instructions in the software and
to direct the flow of data through the computer
Functions of the control unit
NAME:MD.RUBEL HOSSENROLL:13087440COURSE NAME:COMPUTER IN BUSINESSCOURSE NO:203
ARITHMETIC LOGIC UNIT IS THE PART OF COMPUTER PROCESSOR(CPU) THAT CARRIES OUT ARITHMETIC AND LOGIC OPERATION ON THE OPERANDS IN COMPUTER INSTRUCTION WORDS
GRAPHICAL PRESENTATION OF ALU
10
MACHINE INSTRUCTIONS THAT USE THE ALU SPECIFY FOUR THINGS:
The operation to perform.The the first operand (often in a register).The second operand (often in a register).The register that receives the result.
Md.Mukter HossainID. No-13047447Dept. of MarketingUniversity of Rajshahi
TOPIC
Operation perform by CPU / Function of CPU
CPU
The CPU is said to be the brains of any computer system. It provides all the timing and control signals necessary to transfer data from one point to another in the system
.
the transfer of data between itself and the memory section
manipulation of data in the memory section or stored internally
the transfer of data between itself and input/output devices
Complet CPU & Chip Card
Functional unit of CPU
CPU has to implement 4 basic functions during instruction cycle1. fetch2. decode3. execute4. store
Operation perform by CPU
CPU function
Fetch Cycle
Decode Cycle
Execute Cycle
Fetch/Decode/Execute/Store
Animated fetch decode execute
Sabbir Hossain
I.D No: 13087455
B.B.A 2nd Year 1st Semester
Department Of Marketing
University Of Rajshahi
Topic
Input Devices
WHAT IS INPUT?
Any data or instruction entered into the computer is known as INPUT.
An input device helps you to communicate with the computer.
To enter information and issue commands, you use input devices.
Examples of input devices: Keyboard Mouse Scanner Microphone Digital Camera and Web Camera Joystick
Keyboard The keyboard is the most common and widely used input
device. It is made up of buttons called 'keys'. The keys are
arranged into sections:
• Alphabet keys • Function or F keys (F1, F2, F3) • Numeric keys (one set above the alphabet keys and a numeric keypad on the right) • Arrow keys •Command keys (insert, delete, home, end, page up/down)
Image Of Keyboard
Mouse
A mouse is an input devices that fits comfortably under the palm of your hand.
A mouse is a pointing device. We use mouse to control the movement
of the mouse pointer on the screen and to make selections from the screen.
The bottom of a mouse is flat and contains a mechanism that detects the movement of a mouse.
Types Of Mouse
Optical mouse Mouse in which the ball is replaced by an optical
system (light-emitting diode and sensor); it has no movable parts.
Wheel mouse Mechanical or optical mouse that contains a scroll
wheel.
Cordless mouse Mechanical or optical mouse connected to the
computer by infrared or radio signals.
Image of Mouse
Scanner
A scanner is a light-sensing input device that reads printed text and graphics and then translates the results into a form the computer can use.
The image or text can be saved or changed on the computer.
Types Of Scanner
Bar code reader Device that uses an optical scanning
process to decode information contained in bar codes.
Optical scanner Equipment that converts a document’s
graphics or texts into digital data.
Images Of Scanner
Optical scanner Bar code reader
Microphone
Microphone Device that converts electric pulses into
broadcast or recorded sounds.
A microphone allows you to record your voice to the computer.
It also lets you speak to other people using computers or even on the telephone.
A microphone is also called a mic.
Picture Of A microphone
Joystick
A joystick is a pointing device that works on the principle of
trackball
To make the movement of the spherical ball easier, it is
placed in a socket with a stick mounted on it
On most joysticks, a button on the top is provided to select
the option currently pointed to by the cursor
Commonly used for controlling player movements in video
or computer games
Various Types Of Joystick
Digital Camera, camcodor And Web Camera
Web camera Miniature digital camera used to transmit video images
in real time or for videoconferencing over the Internet. Digital camcorder
Portable video camera in which the recording tape is replaced by a processor, which records and stores sounds and images in digital format.
Digital camera Camera that contains a sensor and a microprocessor
rather than film; it records and stores images in digital form, which can then be viewed on a screen.
Picture Of Digital Camera, Camcodor And Web Camera
NAME :MD. SAIFUL ISLAMID: 13067472
Topic : output devices
Output device
An output device is any piece of computer hardware equipment used to communicate the results of data processing carried out by an information processing system (such as a computer) to the outside world.
Output devices
Monitor
SpeakerHeadphon
ePrinter
Plotter
Projector
Monitor
Monitor is a TV like
device that display
information.
It can display text as well as graphic
images in color or black &
white while based on monitor
type.
Monitors are
classified on the basis of color and signals.
Soundcard & speaker
Sound cards enable the
computer to output sound
through speakers. Speakers are required to listen
to music and video CD/DVD sound.
This also allow us to listen to the
computer generated sound.
Some monitors have built in
speakers.
Headphones
Headphones give sound output from
the computer.
They are similar to speakers, except they are worn on the ears so only one person
can hear the output at a time.
Printer
A printer is a device that prints text or illustrations on paper.
There are many types of printers an they are:
Daisy-wheel Dot-Matrix Ink-Jet printer Laser LED Thermal
Plotters are similar to the computer printers.
It is used to draw pictures on paper based on commands from a computer.Plotters differ from printers in that they draw lines using a pen.
They can produce continuous lines.
Plotters are used in engineering applications.
They are more expensive than printers.
plotter
Projector
A projector is a device that enables an image,
such as a computer screen, to be projected
onto a flat surface.
These devices are commonly used in meetings and
presentations as they allow for a large image to be shown so everyone in a room can see.
Welcome to our presentation
session
group no
02
This is Zubayear Hosen ID No is 13107489
Definition of RAM….
RAM stands for Random Access Memory . It is the middleman of CPU and Hard drives . It makes a relationship between CPU and hard drives.
In other words, RAM is the part of computer memory that is used while computer is doing something. It is the short term memory and it’s data storage capacity is volatile because when the electricity is cut off ,then the storage in this memory will be gone.
R A
M
Function of RAM…
01. It helps to increase the speed of CPU ,so the higher RAM is the higher speed of computer is.
02. It is the temporary memory computer uses to store anything temporarily.
03. It acts as the intermediary between the hard drive and CPU.
04. The data incoming and leaving the CPU passes through the RAM easily
05. It holds all currently running information of computer.
06. To run the application , firstly, it is loaded here and then it works.
Types of RAM..
There are mainly two types of RAM. 01.SRAM 02.DRAM
(SRAM) Static RAM is consisted of flip-flop which contains binary bits(0,1). In this RAM the data which is stored is contained as far as the electricity is provided ,other it will be vanished.Features: 01.High speed 02. Costly03.Does not require any refreshment.04.Use for cache
DRAM..
Dynamic RAM is a RAM where binary bits(0,1) are contained in capacitor as electronic charge. In DRAM chip ,capacitor is created by MOS transistor .
There are two types of DRAM. 01.SDRAM(synchronous dynamic RAM) 02.ADRAM(Asynchronous dynamic RAM)Features: 01.Relatively low speed. 02.Low cost. 03. Requires refreshing periodically. 04 .Use for main memory. 05.High control complaints.
MD. RASEL ISLAMRoll-13107497
Topics:
Rom Types of Rom Flash Memory Hard Disk
Rom(Read only memory):
Rom used for storing program and data parmanently. The data and programmes required for some application stored in the rom chip.
Charecteristics:
1. User can only read from it2. Manufacturer stores instruction into rom
memory3. It is permanent
Types of Rom:
PROM(programmable read only memory) EPROM(Erasable programmable read only
memory) EEPROM(Electronically Erasable and
programmable read only memory)
Flash Memory:
Flash memory is an electronic non volatile computer storage medium that can be electrically erased and reprogrammed.
Hard Disk:
Hard disk drives is the main and usually largest data storage device in a computer.The operating software tytle and most other files are stored in hard disk drive
WELCOME TO
PRESENTATION ON
Computer in Business
Soumen ChakrabartiClass i.d 13117504
What is microprocessor?
A microprocessor incorporates in function of a computers central processing unit [cpu] on a single integrated circuit [ic]. Microprocessor is a multipurpose programmable device that accepts digital data as input, process it according to instruction stored in its memory and provides results as output. It is an example of sequential digital logic.
History of microprocessor:
At this modern age we get computers at lower cost. General purposes of microprocessor in personal computers are used for computation, tax editing, multimedia display etc. Intel 4004 is the first commercial microprocessor. It introduced in the market in November 1971. It is very important invention of the 20th century
Structure of microprocessor:
The microprocessor is also known as the central processing unit[cpu]. IT is the brain of the computers.
Work of microprocessor:
Now the computer I use to read this page using a microprocessor to this work. The microprocessor is the heart of any normal computer whether it is desktop machine, a server or a laptop. A microprocessor is a computer processor on a micro chip. The work of microprocessor is given below:
1. For computation 2. Tax editing 3. Communication through internet.4. Multimedia display.
MD. JUEL RANA
Id : 13067508
Advantage of computer in our business life
Organization Self-Sufficiency Speed Sales Accounting & Finance Communication Documents/ Presentation Research