1.1 Introduction-to-Computer-pdf.pptx

INTRODUCTION TO COMPUTERS ITE-10 RHENA BATION OBJECTIVES OVERVIEW Define what is a computer Explain data, process, and information Describe the five components of a computer A WORLD OF COMPUTERS Computers are everywhere....

INTRODUCTION TO COMPUTERS ITE-10 RHENA BATION OBJECTIVES OVERVIEW Define what is a computer Explain data, process, and information Describe the five components of a computer A WORLD OF COMPUTERS Computers are everywhere. Many people believe that computer literacy is vital to success. Computer literacy involves having a knowledge and understanding of computers and their uses.  Produces Collects WHAT IS A COMPUTER? Data(input) Processing information(ou tput) A computer is an electronic device, operating under the control of instructions stored in its own memory, that can accept data, process the data according to specified rules, produce results, and store the results for future use. DIFFERENCE OF DATA AND INFORMATION? Computers process data into information. Data is a collection of unprocessed items, which can include text, numbers, images, audio, and video. Information conveys meaning and is useful to people. INFORMATION PROCESSING CYCLE Data Data Processin g Storage Information  co mp COMPONENTS OF COMPUTER ute r to Ca sen se d tha an Har t d con rec dw All tai eiv are ns Hol e ow co the dat s mp ds ele a, yo on dat ctr ins u ent a, oni tru to tha ins c cti ent t tru co ons er con cti mp , dat vey ons on an a s , ent d an inf an s of inf d or d the or ins ma inf co ma tru tio or mp tio cti n ma ute n ons to tio r to int on n tha an oa e for t d co or fut are fro mp mo ure use m ute re use d on r. pe to e opl pro or e OUTPUT DEVICE COMMUNICATIO ces mo INPUT DEVICE SYSTEM UNIT s re dat co STORAGE DEVICE a mp ute NS rs or mo bile de vic es INPUT DEVICES An input device is any hardware component that allows you to enter data and instructions into a computer. OUTPUT DEVICES An output device is any hardware component that conveys information to one or more people. SYSTEM UNIT The system unit is a case that contains electronic components of the computer that are used to process data. The circuitry of the system unit usually is part of or is connected to a circuit board called the motherboard.  The processor is also called the Central Processing Unit, the electrical components that interprets and caries out instructions that operate computer. SYSTEM UNIT Memory consists of electronic components that store instructions waiting to be executed and data needed by those instructions. Most memory keeps data and instructions temporarily, which means its contents are erased when the computer is shut off. STORAGE DEVICES Storage permanently holds data, instructions, and information for future use. A computer keeps data, instructions, and information on storage media.  Example of Storage Media are USB flash drives, hard disks, CDs, DVDs, and memory cards. A storage device records (writes) and/or retrieves (reads) items to and from storage media. COMMUNICATION DEVICES A communications device is a hardware component that enables a computer to send (transmit) and receive data, instructions, and information to and from one or more computers. Communications occur over cables, telephone lines, cellular radio networks, satellites, and other transmission media. END OF PRESENTA