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Questions and Answers
The output unit converts the data entered by the user into computer understandable form
The output unit converts the data entered by the user into computer understandable form
False
A _____ monitor looks like a television and are normally used with non-portable computer systems.
A _____ monitor looks like a television and are normally used with non-portable computer systems.
CRT
Input and ______ is the raw material used as input and ______ is the processed data obtained as output of data processing.
Input and ______ is the raw material used as input and ______ is the processed data obtained as output of data processing.
Data, information
Any electronic holding place where data can be stored and retrieved later whenever required is ______
Any electronic holding place where data can be stored and retrieved later whenever required is ______
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Size of the ______ memory mainly depends on the size of the address bus.
Size of the ______ memory mainly depends on the size of the address bus.
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MAR stands for ______
MAR stands for ______
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Optical disks are proved to be a promising random access medium for high capacity secondary storage
Optical disks are proved to be a promising random access medium for high capacity secondary storage
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The tracks are divided into sectors whose size ______
The tracks are divided into sectors whose size ______
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A kilobyte (KB) is 1024 byte
A kilobyte (KB) is 1024 byte
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A(n) ______ is a device that is used for optical character recognition
A(n) ______ is a device that is used for optical character recognition
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Study Notes
Computer Peripheral Devices
- The CPU is not considered a peripheral device. Peripherals are external devices that work with the computer.
System Unit Port
- A port is a place in the system unit that allows data transfer between devices and the computer.
Read-Only Memory (ROM)
- ROM is computer memory where users cannot write new information or instructions.
Group of 8 Bits
- A group of 8 bits is called a byte.
Megabyte Conversion
- A megabyte (MB) is equal to 1024 × 1024 bytes.
Device Drivers
- Device drivers allow input and output devices to communicate with the rest of the computer system.
Computer Memory Types
- The two fundamental types of computer memory are primary and secondary.
Non-Erasable Audio Disk
- A CD is a non-erasable disk that stores digitized audio information.
Computer Processing
- The process of producing useful information for the user is outputting.
Output Unit Function
- The output unit converts user-entered data into a form the computer understands. It does not supply the data and instructions to the computer for further processing.
Smallest Unit of Data
- The smallest unit of data in a computer is a bit.
Input Unit Functions
- The input unit reads data and instructions from the outside world. It does not convert the data into a user-friendly format.
Raw Materials for Data Processing
- Data and instructions are the raw materials used in data processing.
Computer Characteristics
- A characteristic that is not a fundamental characteristic of a computer is I.Q.
Memory Location
- Memory is an electronic holding place where data can be stored and retrieved later.
Main Memory Size
- The size of main memory depends on the address bus size.
Independent Memory
- Secondary memory is independent of the address bus.
Memory Address Register (MAR)
- MAR is an abbreviation for Memory address register.
Optical Disk Storage
- Optical disks are a promising medium for high capacity secondary storage.
Optical Disk Technology
- The technology used in optical disks is laser beam technology
Optical Disk Storage capacity
- The storage capacity of an optical disk is given by the number of sectors multiplied by the number of bytes per sector.
Disk Rotation
- Disk rotation varies inversely with the radius of the disk.
Sector Size
- Sector size in tracks remains constant.
Optical Disk Access Time
- The range of access times for optical disks is generally 100 to 300 milliseconds.
Laser Beam Technology
- The technology used for DVD's is laser beam technology.
Input Device Example
- A bar code reader is an example of an input device.
Computer with Television Interaction
- A supercomputer is a computer that can interact with a television set.
Computer Characteristics (excluding High Cost)
- The fundamental characteristics of a computer do not include high cost.
Computer Classifications
- One classification of computers that is not valid is a "maxicomputer."
Computer Users
- Computer users who are not computer professionals are often called end-users.
Powerful Computers
- Supercomputers are the most powerful computers.
Kilobyte Definition
- A kilobyte (KB) is equal to 1024 bytes.
Memory Allocation
- Memory management is the process of allocating main memory to programs and keeping the programs separate.
Primary Storage
- A primary storage unit is also known as memory.
Memory Types
- One example of a memory type that is not a valid type is QRAM.
Logic Chip Name
- Another name for a logic chip is a microprocessor.
Data Representation
- Data is represented on a computer using a two-state (on/off) system called the binary system.
Data Characters
- A letter, digit, or special character is represented by a bit.
Memory Capacity Units
- Memory capacity can be expressed in megabytes.
Cache Location
- A cache is built into the CPU chip.
Processor Speed Units
- Processor speed for top-end personal computers is measured in megahertz (MHz).
Pixel Distance
- The distance between pixels on a screen is called dot pitch.
Screen Symbol Representation
- A pictorial screen symbol representing a computer activity is called an icon.
Screen Output
- A soft copy of an image, shown on a screen, is called screen output.
Optical Character Recognition Device
- A wand reader is a device used for optical character recognition (OCR).
Mark Sensing
- Mark sensing is another term for OMR (Optical Mark Recognition).
Screen Refresh Rate
- The rate of screen refreshment is called raster rate.
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Description
Test your knowledge on computer peripheral devices, their functions, and related concepts like memory types and data transfer. This quiz covers essential terms such as ports, device drivers, and megabytes, helping you understand how peripherals interact with computers.
