ITCS-OutputDevices-P4
Part – 1: Output Devices
Output Devices
Definition
Output devices are hardware devices that receive processed data from a computer and present it to the user in a human-readable form such as text, images, audio, or printed documents.
Examples
- Monitor
- Speaker
- Printer
- Projector
Difference Between Hardcopy and Softcopy Output Devices
| Hardcopy Output Devices | Softcopy Output Devices |
|---|---|
| Produce permanent output on paper or other physical material. | Produce temporary output displayed electronically. |
| Outputs are tangible. | Outputs are not tangible. |
| Example: Printer | Example: Monitor, Speaker |
Monitor
Definition
A monitor is an output device that displays text, images, videos and other visual information generated by a computer.
Comparison Between CRT, LCD and LED Monitors
| Feature | CRT Monitor | LCD Monitor | LED Monitor |
|---|---|---|---|
| Definition | Uses a Cathode Ray Tube to display images. | Uses Liquid Crystal Display technology. | Uses LCD technology with LED backlighting. |
| Size & Weight | Large and heavy. | Thin and lightweight. | Thinner and lighter than LCD. |
| Power Consumption | Consumes more electricity. | Consumes less electricity. | Consumes the least electricity. |
Speaker
Definition
A speaker is an output device that converts electrical signals into sound.
How It Works
- The computer sends audio signals to the speaker.
- The speaker converts these signals into vibrations.
- These vibrations produce sound waves that can be heard by users.
Uses
- Listening to music
- Watching videos
- Playing games
- Audio communication during online meetings
Printer
Definition
A printer is an output device that produces hard copies of documents, images and graphics on paper.
Comparison Between Different Types of Printers
| Feature | Laser Printer | Inkjet Printer | Dot-Matrix Printer | 3D Printer |
|---|---|---|---|---|
| Definition | Uses laser technology and toner powder. | Sprays tiny droplets of liquid ink onto paper. | Uses pins that strike an ink ribbon. | Creates three-dimensional objects layer by layer. |
| Print Quality | High-quality text and graphics. | Good-quality color printing. | Lower print quality. | Produces physical 3D models. |
| Speed | Fast printing. | Moderate printing speed. | Slower printing speed. | Much slower than traditional printers. |
Part – 2: Peripheral Devices
Peripheral Devices
Definition
Peripheral devices are external hardware devices connected to a computer to provide additional input, output or storage functions.
Examples
- Keyboard
- Mouse
- Printer
- Scanner
- Speaker
Ports
Definition
Ports are connection points on a computer used to connect peripheral devices and transfer data, audio, video or power.
Common Ports and Their Uses
- USB / Type-C - Used for connecting keyboards, mice, flash drives, charging devices and transferring data.
- HDMI (High Definition Multimedia Interface) - Used for transmitting high-quality digital audio and video signals between computers, monitors, projectors and televisions.
- VGA (Video Graphics Array) - Used for transmitting analog video signals from a computer to a display device.
- Ethernet Port - Used to connect a computer to a wired network for Internet and LAN communication.
- Audio Port - Used for connecting speakers, headphones and microphones.
Exercise Solutions
1. Write the Full Forms of the Following
| S.N. | Abbreviation | Full Form |
|---|---|---|
| i. | USB | Universal Serial Bus |
| ii. | ATM | Automated Teller Machine |
| iii. | CPU | Central Processing Unit |
| iv. | ALU | Arithmetic Logic Unit |
| v. | CU | Control Unit |
| vi. | MU | Memory Unit |
| vii. | RAM | Random Access Memory |
| viii. | SSD | Solid State Drive |
| ix. | PSU | Power Supply Unit |
| x. | ROM | Read Only Memory |
| xi. | Bits | Binary Digits |
| xii. | SRAM | Static Random Access Memory |
| xiii. | DRAM | Dynamic Random Access Memory |
| xiv. | PROM | Programmable Read Only Memory |
| xv. | EPROM | Erasable Programmable Read Only Memory |
| xvi. | EEPROM | Electrically Erasable Programmable Read Only Memory |
| xvii. | CD | Compact Disc |
| xviii. | DVD | Digital Versatile Disc |
| xix. | VDU | Visual Display Unit |
| xx. | CRT | Cathode Ray Tube |
| xxi. | LCD | Liquid Crystal Display |
| xxii. | LED | Light Emitting Diode |
| xxiii. | HDMI | High-Definition Multimedia Interface |
| xxiv. | VGA | Video Graphics Array |
| xxv. | LAN | Local Area Network |
| xxvi. | Gbps | Gigabits per Second |
| xxvii. | Mbps | Megabits per Second |
2. Which of the following is an output device?
Answer: Plotter
3. Write the Appropriate Technical Terms
-
The hardware that allows the computer to communicate information to the user or other devices.
Answer: Output Device -
The physical connectors on a computer or device that allow you to plug in different hardware.
Answer: Ports -
The frequently used HD signal for transferring both high-definition audio and video over a single cable.
Answer: HDMI (High-Definition Multimedia Interface) -
A connector used to transmit audio signals between devices.
Answer: Audio Port