Computer Fundamental

note!Answer: A) Formatted
A disk must be formatted to create tracks and sectors before it can store data.

note!Answer: D) Input
A keyboard sends data into the computer, so it is an input device.

note!Answer: C) 7
Original ASCII used 7 bits for characters, and the eighth bit of each byte was reserved for parity error checking.

note!Answer: C) Intel
Intel is the largest microprocessor manufacturer, known for its x86 processor families.

note!Answer: A) Pulse code modulation
Pulse code modulation (PCM) samples an analog signal and encodes it as a digital bit stream.

note!Answer: B) Human ware
Humanware refers to the people who operate, manage and use computer systems.

note!Answer: C) CPU
The CPU (Central Processing Unit) is considered the brain of the computer, controlling and executing instructions.

note!Answer: D) Humanware
Humanware means the people who work with and manage computers.

note!Answer: D) All of the above
Removable hard disk cartridges, magneto-optical disks and flexible disks can all be removed from their drives.

note!Answer: D) All of the above
DRAM, SRAM and VRAM are all types of RAM.

note!Answer: D) All of the above
Resolution, color depth and refresh rate all determine video display quality.

note!Answer: A) Fixed disk
A fixed disk is a rigid magnetic disk permanently sealed in its drive, unlike removable cartridges.

note!Answer: C) CAM
Content Addressable Memory (CAM) searches its contents to find whether a given data item is stored.

note!Answer: B) Chip card
A chip card (smart card) contains a microprocessor and memory embedded in a plastic card.

note!Answer: D) Intelligent terminals
Intelligent terminals combine a VDT with a microprocessor, so they can be user programmed.

note!Answer: C) Data density
Data density measures how many characters can be stored per unit of physical space (such as per inch).

note!Answer: B) Access arm
The access arm (actuator) moves the read/write heads to a particular track on the disk.

note!Answer: D) summarizing
Summarizing condenses large volumes of output data to show specific information.

note!Answer: D) Both b and c
In serial/sequential access devices such as tape, access time depends on the data's position.

note!Answer: D) Hexadecimal
Each hexadecimal digit represents exactly four binary digits (a nibble).