Computer Peripheral Devices Quiz

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.