Cs2253 computer organization and architecture notes

#Cs2253 computer organization and architecture notes software#
#Cs2253 computer organization and architecture notes code#

it is affected by the speed of the processor, the disk and the printer. What is elapsed time of computer system? The total time to execute the total program is called elapsed time. This pattern of concurrent execution is called multiprogramming or multitasking. What is multiprogramming or multitasking? The operating system manages the concurrent execution of several application programs to make the best possible uses of computer resources. A system is called as multiple bus structure if it contains multiple buses. Compare single bus structure and multiple bus structure? A system that contains only one bus(i.e only one transfer at a time) is called as a single bus structure. What is the use of buffer register? The buffer register is used to avoid speed mismatch between the I/O device and the processor.

#Cs2253 computer organization and architecture notes code#

This is accomplished by recording the required information in individual bits, often called condition code flags. What are condition code flags?ДЈ The processor keeps track of information about the results of various operations for use by subsequent conditional branch instructions. The processor provides the requested service by executing the interrupt service routine. Define interrupt and ISR? An interrupt is a request from an I/O device for service by the processor. What are the steps in executing the program? 1.fetch 2.decode 3.execute 4.store 7. What are the registers generally contained in the processor? MAR-memory address register MDR-memory data register IR-Instruction Register RO-Rn-General purpose register PC-Program counter 6. The user of this program interactively executes command that allow statements of a source program entered at a keyboard to be accumulated in a file. What is text editor? It is used for entering and editing application programs. The OS routines perform the tasks required to assign computer resources to individual application programs. Discuss about OS as system software? OS is a large program or actually a collection of routines, that is used to control the sharing of and interaction among various computer units as they execute application programs.

#Cs2253 computer organization and architecture notes software#

What is compiler? A system software program called a compiler translates the high-level language program into a suitable machine language program containing instruction such as the Add and Load instructions. These operations are described in a format that is independent of the particular computer used to execute the program. Application programs are usually written in a high level programming language, in which the programmer specifies mathematical or text processing operations. What is application software? Give example. 1 DEPARTMENT OF CSE CS 2253 COMPUTER ORGANIZATION AND ARCHITECTURE 2-MARK QUESTIONS AND ANSWERS PREPARED BY E.RAMASUBRAMANIAN ME., AP/CSEДў UNIT-I 1.