Computer Peripheral Devices and Memory Types

Computer Peripheral Devices

• Not a peripheral device: CPU
• Peripheral devices include input and output devices, such as keyboard, monitor, and mouse.

System Unit Ports

• A port is a connection point in the system unit for transferring data between various devices and the computer.

Read-Only Memory (ROM)

• ROM is computer memory that cannot be altered by the user. New data cannot be written to it.

Data Measurement Units

• 8 bits equal a byte.

Megabyte Calculation

• A megabyte (MB) equals 1024 x 1024 bytes.

Device Drivers

• They enable input or output devices to communicate with the computer system.

Computer Memory Types

• The two fundamental types of computer memory are primary and secondary.

Optical Disks

• A CD is a non-erasable disk used to store digitized audio.

Computer Processing

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

Output Unit Function

• The output unit transforms data entered by a user into a computer-understandable format. false

Data Input and Output

• The raw material that is processed is Data, information

Computer Characteristics

• The characteristic that is not a characteristic of a computer is I.Q.

Computer Memory and Storage

• Memory is an electronic storage place for data that can be accessed.

Memory Size

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

Independent Function

• Secondary memory is independent of address bus.

MAR Abbreviation

• MAR stands for Memory address register.

Optical Disks and Storage

• Optical disks are a good option for high-capacity secondary storage.

Optical Disk Technology

• The technology used in optical disks is laser beam.

Storage Capacity

• The storage capacity of optical disks is calculated by multiplying the number of sectors by the number of bytes per sector.

Disk Rotation

• The rotational speed of a disk is inversely related to its radius.

Sector Size

• Sectors on a disk have a constant size.

Access Time

• The range of access times for optical disks is generally between 100 and 300 milliseconds.

Laser Technology Use

• DVDs use laser beam technology.

Input Devices

• A bar code reader is an input device.

Computer Types

• A supercomputer interacts with a television set.

Computer Classifications

• Maxicomputer is not one of the computer classifications.

Computer Users

• End-users are computer users that aren't professionals.

Powerful Computer Types

• Supercomputers are the most powerful types of computers.

Kilobytes

• A kilobyte (KB) is equal to 1024 bytes.

Memory Allocation

• Memory management is the process of allocating main memory.

Primary Storage

• The primary storage unit is also called memory.

Memory Types

• QRAM is not a standard memory type.

Logic Chip Name

• A microprocessor is another name for a logic chip.

Data Representation

• Data on a computer is represented by the binary system.

Data Characters

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

Memory Capacity Measurement

• Memory capacity is measured in Megabytes.

Cache Location

• The L1 cache is built into the CPU chip.

Processor Speed Measurement

• Processor speed is measured in megahertz.

Screen Pixel Measurement

• The gap between pixels is called dot pitch.

Screen Symbol

• A icon is a pictorial screen symbol representing computer activities.

Image Display

• Viewing an image on a computer screen is called screen output.

Optical Character Recognition

• A wand reader is a device for optical character recognition.

Mark Sensing

• OMR (Optical Mark Recognition) is also referred to as "mark sensing."

Screen Refresh Rate

• The rate in which a screen refreshes is called raster rate.

Test your knowledge on computer peripheral devices, data measurement units, and memory types with this engaging quiz. Explore topics like input/output devices, ROM, and the basics of data storage!