Computer fundamental MCQ Questions and answers- Technical Aptitude

1's complement of binary number 1011001 is 0100110. We can find the 2's complement of the binary number by changing each bit (0 to 1 and 1 to 0) and adding 1 to the least significant bit.

Whenever there is an interrupt to the sequential instruction execution then the processors loads its program counter with the starting location of a routine which contains code to execute the interrupt. This location where the part of code is stored is called interrupt service routine (ISR). The processor executes the ISR and returns to the next instruction of the main program.

Control unit interprets program instructions and initiate control operations

Binary representation, just because it only uses two digits has an interesting interpretation. Binary representation of a number is a sum of powers of 2. A power of two is included into the sum if the corresponding digit in the representation is 1.

A computer program that converts assembly language to machine language is Assembler.
Assembler : An assembler is a type of computer program that interprets software programs written in assembly language into machine language, code and instructions that can be executed by a computer.

An assembler enables software and application developers to access, operate and manage a computer's hardware architecture and components.

The time required for the fetching and execution of one simple machine instruction is CPU cycle time.

Effective Time make more sense here. Given an equipment that you are working on, how long will it work for is its effective usage time.

The binary number system is an alternative to the decimal number system that we use every day. Binary numbers are important because using them instead of the decimal system simplifies the design of computers and related technologies.

The standard method for accessing files and devices is the sequential method. It can be like a cassette tape that rewinds itself after every use.

Secondary storage (also known as external memory or auxiliary storage), differs from primary storage in that it is not directly accessible by the CPU. The computer usually uses its input/output channels to access secondary storage and transfers the desired data using intermediate area in primary storage.