Laser printer hota kya hai ?
Printer ek output device hai jo output ko kagaj mein chhap kar prastut karta hai. Kagaj per chhapi gai output ko hard copy kahate Hain. Jaise monitor soft copy ko roop mein prastut Karta hai vaise hi printer theek vaise hi printer printer ke jariya mein hard copy prastut karta hai is prakar printer hard copy output device hai. Copy ko hard copy mein parivaatat Karta hai AVN hard copy se uski copy bhi print karta hai.
#. Joystick kya hota hai ?
Joystick ek input devices hai.
Jiska prayog computer mein game khelne ke liye kya jata hai vaise bhi computer Ke sari games keyboard dwara khele ja sakte hain. Parantu kuchh Gyan teji se gati mein khele jaate Hain Kaun games main ham Apni aapko civil Achanak mahsus nahin karte isliye joystick ka prayog Kiya jata hai ise computer Gyan khelne mein aasani hoti hai ismein anek prakar ki button Hoti hai Jaise computer ko command dete Hain justice ke niche potassium metre Laga hota hai jismein movement hota hai
ISI potassiummeter ke Karan theek aapas aapane jagah per aati hai. Joystick Ko kisi bhi direction mein ghuma sakti hai. Aise joystick ko jyadatar game ke liye prayog Kiya jata hai .
#.Motherboard ka kam kya hai?
Motherboard computer ka bahut mahatvpurn Device hai. Jiske dwara computer ke sabhi upkaran Jaise input device,output device, memories sabhi upkaran computer se Judi rahete hai, aur aapas mein communicate bhi kar te hain.
Motherboard he computer ka Aadhar hai yah motherboard ke sabhi parts ko power supply karne ka karya Karta hai. Jise bhi apna karya sucharu roop se kar sake. Motherboard ko kam uske Naam ki tarah hi hai mother matlab man aur board matlab plastic ka Hara board. Motherboard ko computer ka hubby kaha jata hai kyunki jitne bhi device ko computer se connect Kiya jata hai vah bhi motherboard se connect rahte hain. Motherboard my computer ke अलग-अलग upkaran ko connect karne ke liye अलग-अलग port ya slot Bane hote Hain. Motherboard printed circuit board PCB hoti hai communicate hub ki tarah computer se judne wale sabhi avkaran ke bich mein yah jata karane aur bijali pahunch pahuncha nahin kya Kam Karta hai matlab (power supply).
STORAGE DEVICES
The Devices which are used to store any type of data are called the “Storage Devices”. The Storage Devices are 2 Types:-
Storage Devices
Primary Storage Secondary Storage
or or
Internal Storage External Storage
Operating System :
It is a system software which is used to operate the computer hardware i.e., all the input devices, CPU, Memory and Output devices.
It is also called as “User Interface”. Because, it provides the interface in between the user and computer hardware or system.
If the user wants to communicate or interact with the computer system’s hardware, he can not use the hardware directly. He has to interact through an operating system.
The operating system acts like a mediator in between the user and hardware. So, it is also called as “User Interface”.
Single-User OS : In particular point of time, only single user or one person is operating the system or working with the system, then the Operating system available in that system is called the “single-user operating system”.
The single-user OS is available in the Micro-computers or Personal Computers or the stand-alone computers, which are not depends or which does not contains any link with other computers.
For Example: DOS and WINDOWS Operating System.
Multi-User OS : In particular point of time, number of users or more than one person is operating the system or working with the system, then the Operating system available in that system is called the “Multi-user operating system”.
The Multi-user Operating System is available in the Network or Internet computers, which are depends or get connected with the other systems.
For Example: UNIX and LINUX Operating System.
Computer Hardware Basics
A computer is made up of many parts:
1. Input/ Output (I/O) devices – These allow you to send information to the computer or get information from the computer.
2. Central Processing Unit – CPU or Processor for short. The brain of a computer. Approximately 1.5 in X 1.5 in. Does all the computation/work for the computer.
3. Memory – Although memory is technically any form of electronic storage, it is used most often to identify fast, temporary forms of storage. Accessing the hard drive for information takes time. When the information is kept in memory, the CPU can access it much more quickly.
4. a. Random Access Memory – RAM. Where information is stored temporarily when a program is run. Information is automatically pulled into memory, we cannot control this. RAM is cleared automatically when the computer is shutdown or rebooted. RAM is volatile (non-permanent).
b. Read Only Memory – ROM. More permanent than RAM. Data stored in these chips is non-volatile -- it is not lost when power is removed. Data stored in these chips is either unchangeable or requires a special operation to change. The BIOS is stored in the CMOS, read- only memory.
c. Hard Drive – Where you store information permanently most frequently. This is also non-volatile.
4. Motherboard – A circuit board that allows the CPU to i
nteract with other parts of the computer.
5. Ports – Means of connecting peripheral devices to your computer.
a. Serial Port – Often used to connect a older mice, older external modems, older digital cameras, etc to the computer. The serial port has been replaced by USB in most cases. 9-pin connector. Small and short, often gray in color. Transmits data at 19 Kb/s.
b. Monitor Ports – Used to connect a monitor to the computer.
PCs usually use a VGA (Video Graphics Array) analog connector (also known as a D-Sub connector) that has 15 pins in three rows. Typically blue in color.
Because a VGA (analog) connector does not support the use of digital monitors, the Digital Video Interface (DVI) standard was developed.
LCD monitors work in a digital mode and support the DVI format. At one time, a digital signal offered better image quality compared to analog technology. However, analog signal processing technology has improved over the years and the difference in quality is now minimal.
c. Parallel Port – Most often used to connect a printer to the computer. 25-pin connector. Long and skinny, often pink in color. Transmitsdata at 50-100 Kb/s.
d. USB Port – Universal Serial Bus. Now used to connect almost all peripheral devices to the computer. USB 1.1 transmits data at 1.5 Mb/s at low speed, 12 Mb/s at full speed. USB 2.0 transmits data at 480 Mb/s.
e. Firewire/ IEEE 1394 Port – Often found on Apple Computers. Often used with digital camcorders. Firewire transmits data at 400 Mb/s. Firewire 1394B (the new firewire) transmits data at 3.2 Gb/s.
f. PS/2 Port - sometimes called a mouse port, was developed by IBM. It is used to connect a computer mouse or keyboard. Most computers come with two PS/2 ports.
g. Ethernet Port – This port is used for networking and fast internet connections. Data moves through them at speeds of either 10 megabits or 100 megabits or 1 gigabit (1,000 megabits) depending on what speed the network card in the computer supports. Little monitor lights on these devices flicker when in use.
6. Power Supply – Gives your computer power by converting alternating current (AC) supplied by the wall connection to direct current (DC).
7. Expansion Cards – Used to add/improve functionality to the computer.
a. Sound Card – Used to input and output sound under program control. Sound cards provide better sound quality than the built in sound control provided with most computers.
b. Graphics Card – Used to convert the logical representation of an image to a signal that can be used as input for a monitor.
c. Network Card – Used to provide a computer connection over a network. Transmit data at 10/100/1000 Mb/s
8. CD ROM – A device used to read CD-ROMs. If capable of writing to the CD-ROM, then they are usually referred to as a ‘burner’ or CD-RW.
9. DVD ROM – A device that is used to read DVDs/CDs. If capable of writing to the DVD, then it is often referred to as a DVD-burner or a DVD-RW.
10. Floppy Drive – A device that is used to read/write to floppy diskettes.
11. Fan – Keeps your computer cool. If the inside of your computer becomes too hot, then the computer can overheat and damage part.
12. Heatsink – Used to disperse the heat that is produced inside the computer by the CPU and other parts by increasing surface area
13. The little parts – Capacitors – store energy, Resistors – allows a current through, Transistors – a valve which allows currents to be turned on or off.
14. Case – (Tower if standing upright.) What your motherboard, CPU, etc is contained in.
The three main components of a computer:
1. CPU – Central Processing Unit, coordinates all actions that occur in the system,
executes program instructions.
2. Memory – Used to store information.
3. I/O Devices – Input/ Output devices, which allow you to obtain or display data.
COMPREHENSION QUESTIONS:
1. What are the 3 main components of a computer?
2. Name 3 input devices. Name 3 output devices.
3. What is the brain of the computer?
4. Explain the difference between memory and your hard drive.
5. What are the similarities and differences between RAM, ROM, and hard drives?
6. What allows the brain of the computer to interact with the other parts of the computer?
7. Describe each of the different ports and explain what they are use
d for.
8. What gives your computer power?
This comment has been removed by the author.
ReplyDelete