Computer Fundamental Miscellaneous - Study Mode

[#446] A billionth of a second is defined as a:
Correct Answer

(C) nanosecond

Explanation

Solution: Nanosecond : A nanosecond (ns) is an SI unit of time equal to one thousand-millionth of a second (or one billionth of a second), that is, $$frac{1}{{1,000,000,000}}$$ xa0 xa0of a second, or 10 −9 seconds.

[#447] Which of the following is not currently a topic in computer science?
Correct Answer

(C) Thermodynamics

Explanation

Solution: Thermodynamics is the branch of physics concerned with heat and temperature and their relation to energy and work.

[#448] Where have the program and data to be located before the ALU and control unit of a computer can operate on it?
Correct Answer

(A) Internal memory

Explanation

Solution: The program and data to be located before the ALU and control unit of a computer can operate on it Internal memory. After calculation/manipulation, the ALU stores the output in an output register. The CPU can be divided into two sections, data section and control section. The DATA section is also known as the data path.

[#449] When was Apple Macintosh II microcomputer introduced in the market?
Correct Answer

(C) 1987

Explanation

Solution: The Macintosh II is a personal computer designed, manufactured and sold by Apple Computer, Inc. from March 1987 to January 1990. It is the first model of the Macintosh II family, and the first Macintosh to support a color display. When first introduced, a basic system with 20 MB drive and monitor cost US$5,498. Source : wikipedia.org

[#450] Control Unit of a digital computer is often called the
Correct Answer

(B) Nerve center

Explanation

Solution: The Control Unit of the computer is called the nerve centre of the computer. The brain of the computer is called the CPU. CPU stands for Central Processing Unit. The central processing unit is known as the heart of the computer and the memory unit is known as the brains of the computer.