Computer Fundamental

note!Answer: C) Secondary storage contains data for immediate processing
Secondary storage holds data for long-term storage, not immediate processing. Primary storage (RAM) is used for immediate processing.

note!Answer: D) all of these
A computer can output graphics, voice, and text through appropriate output devices.

note!Answer: C) produces hardcopy or softcopy
Output devices are classified as hardcopy (printed on paper) or softcopy (displayed on screen).

note!Answer: B) daisy wheel
Daisy wheel printers can only print fixed characters, so they cannot print graphics.

note!Answer: A) Niklaus Wirth
Niklaus Wirth designed the Pascal programming language in the late 1960s. Blaise Pascal was a mathematician after whom it was named.

note!Answer: C) hard disc
Hard disks offer direct access and high speed, far faster than sequential magnetic tape or floppy disks.

note!Answer: D) nibble
A group of 4 bits is called a nibble, which is half of a byte.

note!Answer: D) pen plotter
A pen plotter draws images with ink pens to produce high-resolution hard copies.

note!Answer: D) LCD clocks
RAM, microprocessor, and ROM chips are core parts of a PC motherboard, while LCD clocks are not.

note!Answer: C) 8 bits
One byte consists of 8 bits.

note!Answer: B) bit
A bit (binary digit) is the smallest unit of data and can hold the value 0 or 1.

note!Answer: D) laser printer
Laser printers produce the sharpest, highest-quality output among these printer types. Dot matrix and line printers are impact printers with lower print quality.

note!Answer: B) second generation
Transistors replaced vacuum tubes in the second generation of computers (about 1956–1963).

note!Answer: A) Douglas Engelbart
Douglas Engelbart invented the first computer mouse in 1964 at SRI, with William English building it.

note!Answer: D) Connectivity
Connectivity refers to linking separate computer systems so they can communicate and share data.

note!Answer: B) bus
A bus is a shared set of wires that connects several devices and carries data between them.

note!Answer: B) off-line device
An off-line device works without direct communication with the CPU, so it is not under its direct control.

note!Answer: B) teletype terminal
A teletype terminal has a keyboard for input and a printer for output, so it serves both purposes.

note!Answer: B) direct-access storage medium
Magnetic tape is a sequential-access medium, not a direct-access one. Its advantages are low cost, compactness, and reliability.

note!Answer: B) It provides only sequential access to stored data
Magnetic disks provide direct (random) access to data, not only sequential access. Option b is therefore the false statement.