what is computer | all kind of computer

First computing device Charles Babbage an English mechanical engineer and polymath, originated the concept of a programmable computer. Considered the “father of the computer”. Analog computers In 1938  the United States Navy had developed an electromechanical analog computer Vacuum tubes and digital electronic circuits In 1934 went into operation five years later, converting a portion of the telephone exchange network …

Kernel & User Mode

Kernel & User Mode   These are two different modes in which your computer can operate. Prior to this, when computers were like a big room, if something crashes – it halts the whole computer. So computer architects decide to change it. Modern microprocessors implement in hardware at least 2 different states. User mode Mode …

Multiuser operating system

Multiuser operating system Multi-user Multi-user is a term that defines an operating system, computer program, or a game that allows use by more than one users of the same computer at the same time. Multi-user software is software that allows access by multiple users of a computer. Time-sharing systems are multi-user systems. Most batch processing systems for mainframe computers may also be considered “multi-user”, to avoid leaving the CPU idle while it waits for I/O operations to complete. Multi-User …

Technology Transfer Issue’s

Technology Transfer Issue’s             Technology transfer, also called transfer of   technology  (TOT), is the process of transferring technology from the places and in-groups of its organization to wider distribution among more people and places. The appropriate technology aims at endogenous technological development within local communities and regions as a fresh approach to theproblems of technology, society, and environment. … Cultures often influence how technology is …

Short Keys for PC

Short Keys for PC Ctrl+A=SelectAll Ctrl+B=Bold Ctrl+C=Copy Ctrl+D=FillDown Ctrl+F=Find Ctrl+G=Goto Ctrl+H=Replace Ctrl+I=Italic Ctrl+K=InsertHyperlink Ctrl+N=NewWorkbook Ctrl+O=Open Ctrl+P=Print Ctrl+R=FillRight Ctrl+S=Save Ctrl+U=Underline Ctrl+V=Paste CtrlW=Close Ctrl+X=Cut Ctrl+Y=Repeat Ctrl+Z=Undo F1=Help F2=Edit F3=PasteName F4=Repeatlastaction F5=Goto F6=NextPane F7=Spellcheck F8=Extendmode F9=Recalculateallworkbooks F10=ActivateMenubar F11=NewChart F12=SaveAs Ctrl+:=InsertCurrentTime Ctrl+;=InsertCurrentDate Ctrl+”=CopyValuefromCellAbove Ctrl+’=CopyFormulafromCellAbove Shift+F1=What’sThis? Shift+F2=Editcellcomment Shift+F3=Pastefunctionintoformula Shift+F4=FindNext Shift+F5=Find Shift+F6=PreviousPane Shift+F8=Addtoselection Shift+F9=Calculateactiveworksheet Shift+F10=Displayshortcutmenu Shift+F11=Newworksheet Shift+F12=Save Ctrl+F3=Definename Ctrl+F=-Close Ctrl+F5=XL,Restorewindowsize Ctrl+F6=Nextworkbookwindow …

Metropolitan Area Network

Metropolitan Area Network Specific Objectives: At the end of this lesson a student will be able to: Student will be able to explain Metropolitan Area Network Be able to ask questions according to lecture. Be able to improve our mind ability. Introduction: (METROPOLITAN AREA NETWORK) A large computer network which extends to a city or …

 Types of computer network

 Types of computer network Specific Objectives: At the end of this lesson a student will be able to: Student will be able to explain types of computer networks. Be able to ask questions according to lecture. Be able to improve our mind ability. Introduction: (TYPES OF COMPUTER NETWORKS) On the basics of geographic distance, computer …

Serve and Clients

Serve and Clients Specific Objectives: At the end of this lesson a student will be able to: Student will be able to explain server and clients. Be able to ask questions according to lecture. Be able to improve our mind ability. Introduction: (SERVER AND CLIENTS) In a computer network different computers perform different tasks and …

Components of computer network

Components of computer network Specific Objectives: At the end of this lesson a student will be able to: Student will be able to explain Component of computer network. Be able to ask questions according to lecture. Be able to improve our mind ability. Introduction: (COMPONENT OF COMPUTER NETWORK) A computer network consists of the following …

 Computer network, Network

 Computer network, Network Specific Objectives: At the end of this lesson a student will be able to: Student will be able to explain computer network, what is network? Be able to ask questions according to lecture. Be able to improve our mind ability. Introduction: (COMPUTER NETWORK) Most computers system are now connected together in some …