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Concept of operating system:
An operating system is an essential software component of a computer system. The basic objectives of an operating system are to make the computer system convenient to use and to utilize computer hardware in an efficient manner. We can define an operating system as a large collection of software, which manages the resources of the computer system, such as memory, processor, file system and input/output devices. It keeps track of the status of each resource and decides which will have control over computer resources, for how long and when. In doing so, it provides two basic types of services:
1. It accepts requests from users and from the user's programs and executes their commands.
2. It optimally manages the hardware resources of the computer which may include CPU, main memory, hard disks, I/O devices, network interface card, etc.
Time Sharing Time sharing allows a large number of users at various remote terminals to simultaneously use a centrally located computer for problem solving. Each user operates
Computerised Systems : You would have realized by now that computing systems are most useful for manipulating information. Any organisation and management of information basically
Sequential-access memory device: A Sequential-access memory device reads data in sequence. In other words, information on a serial device can only be retrieved in the same s
QUESTION 1 Describe the binary search algorithm using an example of your own. QUESTION 2 (a) By showing all your workings, give a big-O estimate for f(x) = (x + 1)lo
Two-tiered architecture: This approach basically introduced a database server to replace the file server. The emergence of relational database management systems and graphica
Question 1 Explain the different categories of Software applications Question 2 Write a note on Data Dictionaries Question 3 Explain the following (a) Top-down testin
Please what is the different between computer science and information technology? Which of this require too much reading? Thanks
explain the steps to form a colourful card
write a 2 page essay operational gaming and monte carlo simulation
Question 1 Consider the one-time pad encryption scheme to encrypt a 1-bit message m, and assume m is chosen with uniform distribution from message space M={0,1}. Let E1 be the eve
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