Showing posts with label Differences. Show all posts
Showing posts with label Differences. Show all posts

What are the Differences between Computer Hardware and Software?

Computer Hardware:

Computer Hardware is any part of the computer that can be touched. These are primarily electronic devices used to build up the computer. Computer Hardware actually perform the computing operations along with taking input and sending the computed result as output or to storing that.


5 Differences between RAM and Cache Memory

RAM (Random Access Memory) is a volatile memory which is used by the CPU as the Primary Memory of the system. CPU stores frequently used data of the programs running at a moment in RAM as RAM is faster than storage devices, this helps the CPU to work faster. 

7 Differences between RAM and ROM

RAM stands for Random Access Memory and ROM stands for Read Only Memory. Both of these devices are memory devices and are required by a system to function. Following are the differences between RAM and ROM.

8 Differences between optical and magnetic storage devices.


Optical Storage Devices:

Optical storage devices are flat, round disks that spins around its center. The difference with magnetic storage device is that in optical storage devices LASER light is used to read and write data in disks. Examples are CD, DVD etc.

5 Differences between disk and diskette drives

Differences between disk and diskette drives:

The differences between disk and diskette drives are as follows.

Differences among various types of digital computers in respect of their size, cost and working efficiency

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

8 Differences between Memory and Storage devices

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.


7 Differences Between System Software and Application Software

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.

What are CISC & RISC? What are differences between CISC and RISC?

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.


Two initial types of instruction set architecture are CISC (Complex Instruction Set Computer) and RISC (Reduced Instruction Set Computer).


3 Differences between time sharing and real time systems

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 time to each job at once and then move on to the next job. Thus the user can get output from the program and can input another command and wait for the output. Keyboard is used to input command and monitors are for output. A time sharing operating system allows many user to use the same computer at the same time such as every user is using his own computer. This is achieved by frequently switching from one program to another and satisfying users with an output from the program before switching to the next one.

2 differences between time sharing and multi-programmed batched systems?

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 time to each job at once and then move on to the next job. Thus the user can get output from the program and can input another command and wait for the output. Keyboard is used to input command and monitors are for output. A time sharing operating system allows many user to use the same computer at the same time such as every user is using his own computer. This is achieved by frequently switching from one program to another and satisfying users with an output from the program before switching to the next one.

2 Differences between parallel and multi-programmed batched systems

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 job as it can in the memory. Then from the memory, operating system start working on a job. Now, whenever a job reaches a situation where is has to be waiting for one or more tasks to be completed like use of any IO devices, the operating system pulls another job from the memory and starts working on it. Whenever this job also starts waiting, for example it need to use the same IO which is already in use by its previous job, the operating systems pulls another job. This is how, a multi-programmed batched systems harness the power of disk drives and memory.

4 Differences between simple batch and multi-programmed batched operating systems

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 execute on its side and these jobs were generally written on cards, control cards, which the computer used to read through card readers. After processing the job, the computer used to output the data through line-printer machines or tape drives. 

So, the simple batch operating systems were designed to speed up the process by grouping jobs which are similar in nature into one job and execute them and then send back output of each jobs to its programmer. So simple batch systems lack the interaction between the programmer and the machine while it’s running or working on a job.

What is Data and Information? Write the differences between Data and Information.


Data and Information:

Data:

Raw materials used in a process to obtain targeted result of goal are called data. In other words, pieces of information which by itself may or may not mean something but useful when connected or used with other pieces of information to form a piece of information that means something, are called data.