Question:write the limitations of a computer capabilities? 

the computer capabilites we have to connsider are given below:
i)a computer can perform arithmetic operations.
ii)it can compare two things and,on the basis of the result of the comparisn ,choose among alternative courses of action.
iii)it can move data about in its memory
iv)the computer can also read data and output results.

Question:what is a counter? 

a counter is a devise for keeping track of the number of times something occurs.

Question:BASIC,COBOL,FORTRAN,RPG11 means..? 

BASIC     :  Beginner's All-purpose Symbolic Instruction Code.
COBOL    : COmmon Business Oriented Language.
FORTRAN : FORmula TRANslator
RPG11     : Report Program Generator.

Question:Syntax errors mean ? 

Violations of the rules of the particular programming language being used.

Question:Define the external subrotine. 

A set of instruction for performing a particular task that can be used by any program because the instructions reside in a library that is external to the using program.

Question:write the abbreviation of the following______
ANSI
COBOL
FORTRAN
RPGII 

ANSI= American National Standerds Institute
COBOL=COmmon Bussiness Oriented Language
FORTRAN=FORmula TRANsllator
RPG II=Report Program Generator

Question:Name a low level language? 

Assembler.

Question:What do you mean by sequence structure ? 

Some instractions are executed in the order in which they are encountered.This processing steps can be combined and represented by one rectange with a single entry point and a single exit poit.

Question:What do you mean by branch and bug ? 

Branch : Transfer control to another part of a program.
Bug     : An error in a computer program.

Question:What is Algorithm ? 

A sequence of steps that describe of method for solving a program.