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Explain in detail about Operating Systems (OS)
Operating system (OS) is a program which after being initially loaded into computer by a boot program, manages all the other applications/programs. On a PC, first program which runs is stored on a ROM chip. This program checks system hardware to make sure everything is functioning routinely. This checks CPU, memory and basic I/O systems (bios) for errors. If all is satisfactory, BIOS will activate disk drives. When hard drive is activated, OS is found in boot and is then loaded.
Your shell must accept commands from the user. The first step to implement this will be reading a line of input. This section will focus on what to do with the line of input after
Q. Catch output from child tasks? int pvm_catchout( FILE *ff ) Catch output from child tasks. ff is file descriptor on which we write collected output. The defau
Problem: a) Authoring tools consist of two basic features. First, an authoring facility for creating and editing, and second, a presentation vehicle for delivery. The authorin
Explain Real Time Operating System? Real time operating System: A real-time operating system has suitably-defined, fixed time constraints. Processing should be done in the d
Write a program to mask bits D3D2D1D0 and to set bits D5D4 and to invert bits D7D6 of the AX register.
Q. Show Buffered mode for Point-to-point Message Passing? Buffered mode: Transmitting can be started whether or not matching receives has been started and transmitting may comp
Directed-Test Methodology Building a directed verification environment with a comprehensive set of directed tests is very time-consuming and difficult. As directed tests only c
Why a function canot have delays? However in Open Vera, delays are allowed in function. A function returns a value and hence can be used as a part of any expression. This doesn
A full adder logic circuit will have ? Ans. The full adder logic circuit also accounts the carry i/p generated in the earlier stage and it will add two bits. Hence three inputs
Salient points about addressing mode are: This addressing mode is employed to initialise value of a variable. Benefit of this mode is that no extra memory accesses are
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