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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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Study Notes
Computer Peripheral Devices
- CPU is not a peripheral device. Peripherals are devices external to the CPU.
System Unit Ports
- A port in a system unit allows data transfer between various devices and the computer.
Read-Only Memory (ROM)
- ROM is computer memory where users cannot write new information or instructions. Data is permanently stored.
Byte Definition
- A byte is a group of 8 bits.
Megabyte Conversion
- A megabyte (MB) is equal to 1024 * 1024 bytes.
Device Drivers
- Device drivers allow input or output devices to communicate with the computer system.
Computer Memory Types
- The two basic types of computer memory are primary and secondary memory.
CD-ROM
- A non-erasable CD is used to store digitized audio information.
Outputting Data
- The process of producing useful information for the user is called outputting.
Output Unit Function
- The output unit converts the data input by the user into a form understandable by the computer.
Smallest Data Unit
- The smallest unit of data in a computer is a bit.
Input Unit Function
- The input unit reads instructions and data from the outside world. It doesn't convert data into a user-friendly format.
Raw Material for Data Processing
- Data acts as the raw material used in data processing.
Computer Characteristics
- Computer characteristics include speed, accuracy, and capacity; I.Q. is not a computer characteristic.
Memory Definition
- Memory is an electronic holding place where data can be stored and accessed.
Main Memory Size
- The size of main memory is dependent on the address bus size.
Secondary Memory and the Address Bus
- Secondary memory is independent of the address bus.
Memory Address Register (MAR)
- MAR stands for Memory Address Register.
Optical Disks and Storage
- Optical disks are a promising medium for high-capacity secondary storage.
Optical Disk Technology
- The technology used in optical disks is laser beam.
Optical Disk Capacity
- The storage capacity of an optical disk is calculated by multiplying the number of sectors by the number of bytes per sector.
Disk Rotation and Radius
- Disk rotation varies inversely with the radius of the disk.
Sector Size
- Sector sizes in optical disks remain constant.
Optical Disk Access Time
- The typical range for optical disk access time is 100 to 300 milliseconds.
Laser Beam Technology and Devices
- DVDs use laser beam technology.
Bar Code Reader Function
- A bar code reader is an input device.
Supercomputers
- Supercomputers are the most powerful type of computer.
Kilobyte Definition
- A kilobyte (KB) is equal to 1024 bytes.
Memory Management
- Memory management is the process of allocating memory to programs and separating programs in memory.
Primary Storage
- Primary storage is also known as memory.
Memory Types
- SRAM, ROM, DRAM are types of memory; QRAM is not.
Logic Chip Name
- Another name for a logic chip is a microprocessor.
Binary System
- Data on computers is represented using the binary system.
Bit Function
- A bit represents a letter, digit, or special character in computer data.
Memory Capacity Units
- Memory capacity is measured in megabytes (MB).
Cache Location
- Cache memory is built into the CPU chip.
Processor Speed Measurement
- Processor speed is measured in megahertz (MHz).
Dot Pitch
- Dot pitch is the distance between pixels on a computer screen.
Screen Symbol Name
- A pictorial screen symbol that represents a computer activity is an icon.
Soft Copy Definition
- A soft copy of an image refers to showing it on a screen.
Optical Character Recognition Device
- A wand reader is an optical character recognition device.
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, memory types, and data processing. This quiz covers essential topics such as ROM, device drivers, and data output methods. Perfect for students learning about computer systems.
