Showing posts with label Computer. Show all posts
Showing posts with label Computer. Show all posts
Input and Output - computer notes
Input System- An input device is a peripheral or piece of computer hardware equipment, which is used for providing data and controlling signals to an information processing system (Computer).
TYPES OF INPUT DEVICES
1. Keyboard: It is human interface device, which is represented as a layout of buttons. Each button or key could be used to input linguistic character to a computer for particular functions.
2. Pointing Devices (Mouse & Trackball): These are any human interface devices that allow users to input spatial data to a computer. Eg: mouse, trackball, Glidepad
TYPES OF INPUT DEVICES
1. Keyboard: It is human interface device, which is represented as a layout of buttons. Each button or key could be used to input linguistic character to a computer for particular functions.
2. Pointing Devices (Mouse & Trackball): These are any human interface devices that allow users to input spatial data to a computer. Eg: mouse, trackball, Glidepad
Computer Quiz for SBI and IBPS PO
1). The right click options of the mouse is NOT used in which of the following?
a) To copy selected text into the clipboard.
b) To rename file.
c) To cut the selected text
d) To access properties of an object.
e) None of these.
a) To copy selected text into the clipboard.
b) To rename file.
c) To cut the selected text
d) To access properties of an object.
e) None of these.
Computer Notes- Networking and Internet
Computer networking means communication between a group of two or more computer systems linked together. Networks are built with a mix of computer hardware and computer software.
THE MOST COMMONLY DISCUSSED CATEGORIES OF COMPUTER NETWORKS INCLUDE THE FOLLOWING
Local Area Network (LAN)
Wide Area Network (WAN)
Metropolitan Area Network (MAN)
Storage Area Network (SAN)
System Area Network (SAN0
Server Area Network (SAN)
Small Area Network (SAN)
Personal Area Network (PAN)
Desk Area Network (DAN)
Controller Area Network (CAN)
Cluster Area Network (CAN)
Computer Notes- Programming Languages
Programming Language is a machine language (sometimes called machine code). Originally all programmers worked out every detail of the machine code, but this is hardly ever done anymore.
SOME IMPORTANT PROGRAMMING LANGUAGES
FORTRAN In 1957, the first of the major languages appeared in the form of FORTRAN. Its name stands for 'FORmula TRANslation' system. The language was designed at IBM for scientific computing. The components were very simple and provided the programmer with low level access to the computer's innards. Today, this language is considered restrictive as it only includes IF, DO and GOTO statements.
Computer Notes- BASIC DATA STRUCTURES
The computer data is made up of certain components basically called 'bits' and 'bytes'.
Bit: A bit (sometimes abbreviated as b) is the most basic information unit used in computing and information theory. A single bit is a one or a zero, a true or a false, a 'flag' which is 'on' or 'off' or in general, the quantity of information required to distinguish two mutually exclusive states from each other.
Bit: A bit (sometimes abbreviated as b) is the most basic information unit used in computing and information theory. A single bit is a one or a zero, a true or a false, a 'flag' which is 'on' or 'off' or in general, the quantity of information required to distinguish two mutually exclusive states from each other.
Computer Notes- Operating System
An operating system consists of a set of programs that controls, coordinates and supervises the activities of distinctive components of a computer system. Its function is to establish a link between the computer hardware and the user.
"An operating system is a software, or a series of programs, which performs various types of functions in order to manage and organize files."
Some of the most commonly used operating systems are MS DOS, WINDOWS, LINUX, SOLARIES, CP/M etc. Operating system can be classified as follows Multi-user: It allows two or more users to run programs at the same time. Some operating systems permit hundreds or even thousands of concurrent users. Multi-tasking: It enables more than one program to run concurrently. Multi-processing: It supports running a program on more than one CPU. Multi-threading: Allows different parts of a single program to run concurrently. Real-time Processing: Responds to input instantly. They are used to control machinery, scientific instruments and industrial systems, general-purpose operating systems, such as DOS and UNIX are not real-time processing.
Computer Notes- PROCESSING SYSTEM
PROCESSING SYSTEM
Processing System mediates between the input system and output system, which is process of thinking as done by the computer. Processing Systems includes
Calculations
Comparisons
Decisions
The thinking process in the computer is done by manipulating the digital digits as all information in modern computer is stored as a string of zeros or ones off or on. 1bit= one on or off position 1 byte = 8 bits The entire processing part occurs in the central processing unit of the computer system.
Processing System mediates between the input system and output system, which is process of thinking as done by the computer. Processing Systems includes
Calculations
Comparisons
Decisions
The thinking process in the computer is done by manipulating the digital digits as all information in modern computer is stored as a string of zeros or ones off or on. 1bit= one on or off position 1 byte = 8 bits The entire processing part occurs in the central processing unit of the computer system.
Computer Quiz
1). If a computer provides database services to other, then it will be known as ?
1. Web server
2.Application server
3. Database server
4. FTP server
Ans- 3
1. Web server
2.Application server
3. Database server
4. FTP server
Ans- 3
Computer Awareness Quiz
1.What is the full form of VIRUS?
1) Various Information Resources Under Siege
2) Vital Information Resources Under Suspicion
3) Vital Information Resources Under Siege
4) Various Information Resources Under Sabotage
5) None of these
1) Various Information Resources Under Siege
2) Vital Information Resources Under Suspicion
3) Vital Information Resources Under Siege
4) Various Information Resources Under Sabotage
5) None of these
Computer Quiz
1.This consists of a central node, to which all other nodes are connected.
1) Client
2) Server
3) Hub
4) Gateway
5) None of these
1) Client
2) Server
3) Hub
4) Gateway
5) None of these
Computer Quiz
1. A device operating at the physical layer is called a
1) Bridge
2) Router
3) Repeater
4) All of the above
5) None of these
1) Bridge
2) Router
3) Repeater
4) All of the above
5) None of these
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