Computer Peripherals and Memory Quiz

Computer Peripherals

• A CPU is not a peripheral device. Peripherals are external devices that support the computer system.

Computer Ports

• A port is a connection point where data is transferred between a variety of devices and the computer.

Computer Memory (ROM)

• ROM is computer memory where users cannot write or change information.

Computer Data Units

• A group of 8 bits is called a byte.

Megabytes

• A megabyte is equal to 1024 * 1024 bytes.

Device Drivers

• Device drivers enable input and output devices to communicate with the computer system.

Computer Memory Types

• The two basic types of computer memory are Primary and Secondary memory.

Optical Disks

• A CD is a non-erasable disk used for storing digitized audio information.

Computer Processing

• Outputting is the process of producing useful information for the user.

Computer Input/Output Functions

• The output unit converts the data entered by the user into a format that the computer understands.
• The output unit does not supply data instructions to the computer for further processing. Instead, the input unit does that.

Smallest Unit of Data

• The smallest unit of data in a computer is a bit.

Input Unit Function

• The input unit reads data and instructions from the outside world.
• The input unit does not convert data to be user friendly.

Raw Materials for Data Processing

• Data and information are raw materials for data processing.

Computer Characteristics

• I.Q. is not a characteristic of a computer. Instead, computers have characteristics like speed, accuracy, and storage capacity.

Memory Location

• Memory is any electronic holding place where data can be stored and retrieved later.

Memory Size

• The size of main memory depends on the address bus size.

Independence of Memory

• Secondary memory is independent of the address bus.

MAR (Memory Address Register)

• MAR stands for Memory Address Register.

Optical Disk Storage

• Optical disks are a promising random access medium for large-capacity secondary storage.

Optical Disk Technology

• The technology used in optical disks employs laser beams.

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

• Disk rotation varies inversely with the radius of the disk.

Disk Sectors

• The size of sectors in which tracks are divided remains the same.

Optical Disk Access Time

• The typical access time for optical disks is 100 to 300 milliseconds.

Laser Technology in Devices

• DVD uses laser beam technology.

Input Devices

• A bar code reader is an example of an input device.

End Users

• Computer users who aren't computer professionals are known as 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 separating them in memory.

Primary Storage

• Primary storage is also known as memory.

Memory Types

• QRAM is not a type of memory.

Logic Chip

• Microprocessor is another name for a logic chip.

Data Representation

• Data is represented on computers using the binary system.

Character Representation

• A letter, digit, or special character is represented by a bit.

Memory Capacity Units

• Memory capacity is often expressed in megabytes.

Cache Memory

• Cache is built into the CPU chip.

Processor Speed Measurement

• Processor speed for personal computers is measured in megahertz (MHz).

Screen Pixel Distance

• The distance between pixels on a screen is known as dot pitch measure.

Screen Symbols

• Icon represents a computer activity on a screen.

Screen Output Image

• Soft copy of image means showing it on the screen.

Optical Character Recognition Device

• A wand reader is an optical character recognition device.

Mark Sensing

• Mark sensing is another term for OMR.

Screen Refresh Rate

• The rate of screen refreshment is called raster rate.

Test your knowledge on computer peripherals, memory types, and data units. This quiz covers essential concepts such as ROM, device drivers, and data transfer methods. Perfect for anyone looking to enhance their understanding of computer hardware.