Notes with worthy tutorials
Differences between disk and diskette drives: The differences between disk and diskette drives are as follows. No. Subject Disk Drives Diskette Drives 1 Number of drives Every computer has at least one disk driver Diskette drives are optional 2 Capacity Storage capacity can reach up to a few terabytes Very little capacity, up to few … Read more
There are 4 kinds of digital computers in respect of their size, cost and working efficiency;such as (a) Microcomputer (b) Minicomputer (c) Mainframe Computer and (d) Super Computer (a) Microcomputer: ‘Mirco’ means very small. Thus as it’s name implies, microcomputers are small in size and built with microprocessors. It has CPU, ROM, RAM storage and … Read more
Though it may seem from the names that memory and storage devices are same thing, but actually they are far different. Following are the differences between Memory and Storage Devices. 8 Differences between memory and storage devices: Term Memory Storage Speed Very speedy, that is, it responds very fast Slower than memory devices Cost Very … Read more
A system, such as: a computer, mobile or device like microwave oven, must need software to function. A software is a set of coded instruction for the system to execute in order to have it’s hardware parts performing actions. However, software is primarily of two types, system software and application software. System Software: Software that … Read more
The instruction set or the instruction set architecture (ISA) is the set of basic instructions that a processor understands. The instruction set is a portion of what makes up an architecture. Read More: Define Instruction Set Architecture. What are the main objectives of ISA in computer systems. Two initial types of instruction set architecture are … Read more
Memory Mapped I/O and Isolated I/O are two methods of performing input-output operations between CPU and installed peripherals in the system. Memory Mapped I/O: Memory mapped I/O uses the same address bus to connect both primary memory and memory of hardware devices (registers). Memory and registers of I/O devices gets assigned values, thus when CPU … Read more
Q. What are time sharing and real time systems? What are the differences between time sharing and real time systems? Time-Sharing Systems: Time sharing operating systems are extension of multi-programmed batched operating system and the extension is that here the user can interact with the program running. The CPU scheduling algorithm and allocate small amount … Read more
Q. What are time sharing and multi-programmed batched systems? What are the differences between time sharing and multi-programmed batched systems? Time-Sharing Systems: Time sharing operating systems are extension of multi-programmed batched operating system and the extension is that here the user can interact with the program running. The CPU scheduling algorithm and allocate small amount … Read more
Q. What are parallel and multi-programmed batched systems? What are the differences between parallel and multi-programmed batched systems? Multi-programmed Batched Systems: In multi-programmed batched operating systems, the operating system reads jobs from disk drives where a list of jobs are already being stored through card readers. The operating system then pull and store as much … Read more
Q. What are simple batch and multi-programmed batched operating systems? What are differences between simple batch and multi-programmed batched operating systems? Simple Batch Systems: Early computers used to take one job at a time, no input in the middle of the process and also no output either. The jobs were prepared commands for the computer to … Read more