Computer Science

Stack pointer is initialized before stack operation, it is a 16-bit register that stores data temporarily. It follows a LIFO operation. So, it contains the address of the top of the stack memory.

A system software is responsible for controlling the operations of a computer system. Word Processor is an application software since it is specific to its purpose.

The secondary memory which allows us to store a large amount of data is often referred to as the auxiliary memory. It generally stores large amount of data on a permanent basis.

Waterfall model is based on step-by step completion of the project. Every step is done individually.

Flag register is not used in opcode fetch operations. It is used to represent the status of ALU operation which is performed after decoding of the opcode.

The fourth generation of computers is marked by the use of Very Large Scale Integrated (VLSI) circuits. In this generation Time sharing, Real time, Networks, Distributed Operating System was used.

The length of a register is called word size. It tells the number of bits a register can store.

PCI is a high-bandwidth bus that can function as a peripheral bus. Compared with others, it delivers better system performance.

The answer is column number. There are no column numbers in a spreadsheet. Columns are represented using letters.

Outlook is an example of email utility. Word is a word processor, Excel is a spreadsheet software.