TECH INFO

  https://techinfo4243.blogspot.com A LITTLE INTRO OF A SOFTWARE: A set of instruction given to the computer to  solve a problem is called software. A computer works according to the instructions written in the software. It is also known as program . Different softwares are used to solve different problems . The computer cannot perform any task without a software.  EXAMPLES: Software for creating documents such as MS WORD. Software for graphics such as adobe photoshop. RELATION OF SOFTWARE AND HARDWARE: Software is a set of instructions that tells the computer what to do . Hardware cannot perform any task without software. The software cannot be executed without hardware. A computer becomes useful when hardware and software are combined.  WHAT IS DATA? A collection of raw facts and figures is called data . (It means the data that is meaningless at that time) Data is given to the computer for processing.  Data is collected from different sources.  WHAT IS IN...

https://techinfo4243.blogspot.com  I T PROFESSIONALS: A person who has adopted the field of information technology as a profession is called IT PROFESSIONAL. IT professional are responsible for acquiring , developing , maintaining or operating hardware and software associated with computers and communication networks. TYPES OF IT PROFESSIONALS: 1- COMPUTER PROGRAMMER: Computer programmer is a person who writes computer programs. The programs are written to solve different problems . He also modifies an existing program to meet the new requirements or remove errors. A programmer has very good knowledge of programming languages. 2- DATABASE ADMINISTRATOR: Data administrator is a perosn who designs , develops . implement and maintain the database. He analyzes and determines the most effective way to collect and store data.He is also responsible for the security , backup , and restoring of database. He provides access the authorized users and moniters the performance of the databases. ...

TECH INFOhttps://techinfo4243.blogspot.com  SOFTWARE OF COMMUNICATION: There are some software of communication: Email FTP New groups Chatting and instant messagging Web browser Internet telephony Video conferencing EXPLAIN: 1-       Email stands for electronic mail. It is the exchange of texts , messages, and files through the internet.Messages can be in the form of graphics , sounds video chips or simple text. Email is a fast way of delivering messages anywhere in the world in a very short time. Email can be sent using an email software. This software is integreted in many suites of available for free on the web . Email software can also be purchased from the retailer. 2-      FTP stand for file transport protocol. It is used on internet for sending files from one place to another. It is specially designed for professionals , audio , video , graphics , and data files can be uploaded or downloaded using this protocol. Different softwares are a...

https://techinfo4243.blogspot.com   CLASSFICATION: Computer are classfied on the basis of size , speed , processing power and size. However classfication of computer is not very straight forward. The distinction between these cetogories is sometimes not very clear. Some characteristics overlap different categories. Computers can be classfied as follows: Personal computer Mobile devices Minicomputer Mainframe computer Supercomputer Embeded computer EXPLAIN: PERSONAL COMPUTER: Personal compter is designed to be used by one person at a time. It consists of a processor , memory and one or more input, output and storage devices. It also often contains a communication device. Personal computers are available in different sizes and shapes. Personal computers are commomly used in business at home and other fields of life. Major types of personal computer are desktop computer portable computers. MOBILE DEVICES: A mobile device is a computing device designed to hold in the hand. Mobile devic...

 COMPONENTS OF COMPUTER HARDWARE: Different componenets of a computer hardware are as follows: Input devices Output devices System unit Storage devices EXPLAIN:  The data and instructions given to the computer is called input. A hardware component used to enter data and instructions into the computer is called input device.  Different types of input devices are used to input data into the coputer are as follows. Keyboard Mouse Microphone Scanner Digital cemera     2.     The data  processed into useful information is called output. A hardware component used to display information to the user is called output device. Most commonly used output devices are as follows: Moniter Printer Speaker 3.       System unit is a case that contains electronic components of the computer used to process data. All computer systems must a system unit.  The electronic in the system unit are connected to the motherboard. Motherboard is a...

   DATABASE MANAGEMENT SYSTEM:  (DBMS) A  database management system  is a set of programs that are used to create , maintain and manipulate database in a convenient and efficient manner. It allows the user to store and recieve data in the database. The manipulation of data using DBMS include the following. Adding new data to the database Deleting existing data from database. Updating the existing data Database provides the environment in which thr user can access the data easily. It provides user friendly access and control between the user and database, Database management system provides the facility of data sharing. The data stored in DBMS can be shared among diffeent applications and users. It helps in decision making and increases the end user productivity. Some examples of database systems that are created and managed by DBMS include customer information systrm ,inventory control system, library management system and accounting system etc. EXAMPLES: Micro...