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• • • • • EXPLAIN THE FIVE PARTS OF AN INFORMATION SYSTEM: PEOPLE, PROCEDURES, SOFTWARE, HARDWARE, AND DATA. DISTINGUISH BETWEEN SYSTEM AND APPLICATION SOFTWARE. DISCUSS THE THREE KINDS OF SYSTEM SOFTWARE PROGRAMS. DISTINGUISH BETWEEN BASIC AND SPECIALIZED APPLICATION SOFTWARE. IDENTIFY THE FOUR TYPES OF COMPUTERS AND THE FOUR TYPE OF MICROCOMPUTERS. • DESCRIBE • DEFINE DATA AND DESCRIBE DOCUMENT, WORKSHEET, DATABASE, AND PRESENTATION FILES. EXPLAIN COMPUTER CONNECTIVITY, THE WIRELESS REVOLUTION, AND THE INTERNET. • THE DIFFERENT TYPES OF COMPUTER HARDWARE INCLUDING THE SYSTEM UNIT, INPUT, OUTPUT, STORAGE, AND COMMUNICATION DEVICES. • • • • 1. 2. 3. 4. • • • • • • • • • • • • • • • • • • • • • • 9 • • • • • • • • • • • • • • • • BASIC APPLICATION • • • • • • • • • • DOCUMENT FILES WORKSHEET FILES DATABASE FILES PRESENTATION FILES • • • • • • • • • • • DESKTOP • TABLET PC NOTEBOOK OR LAPTOP • • NOTEBOOK COMPUTERS, ALSO KNOWN AS LAPTOP COMPUTERS, ARE PORTABLE, LIGHTWEIGHT, AND FIT INTO MOST BRIEFCASES • ADVANTAGES & DISADVANTAGES COMPARED TO A DESKTOP? • • • • COMMON INPUT DEVICES ARE THE KEYBOARD AND THE MOUSE • • • OTHERS? COMMON OUTPUT OTHERS DEVICES ARE PRINTERS AND MONITORS • • • • • • • • 26 • • • • • • • • • • 27 • Hard (fixed) disk 1 TB and higher Removable storage CD-ROM CD-R/CD-RW DVD/DVD-R/DVD-RW Tape (common for backups) Flash Drives & SD Cards Outdated Zip disks Floppy Disks 29 RAM Input CD , DVD, Flash Drive CPU Output Hard Drive • • • • • • • • • • • • On Off • 33 • CONNECTIVITY • • SHARING OF INFORMATION WIRELESS COMMUNICATION IS BECOMING POPULAR • COMPUTER NETWORKS • CONNECTED COMMUNICATION SYSTEM OF COMPUTERS • LARGEST NETWORK IS THE INTERNET • COMMUNICATION DEVICES ENABLE MICROCOMPUTERS • THE MODEM (SHORT FOR MODULATOR/DEMODULATOR) IS THE THE ABILITY TO COMMUNICATE WITH OTHER COMPUTER SYSTEMS ACROSS THE GLOBE MOST WIDELY USED COMMUNICATION DEVICE • MODEMS MODIFY TELEPHONE COMMUNICATIONS THAT CAN BE PROCESSED BY A COMPUTER • MODEMS ALSO MODIFY COMPUTER OUTPUT INTO A FORM THAT CAN BE TRANSMITTED ACROSS STANDARD TELEPHONE LINES • NETWORK CARD – WIRELESS AND WIRED (ETHERNET) INTO A FORM • • • • • • • • • • • • • • • • 38 • • • • • • • • http://gargasz.info/wp-content/uploads/2009/12/what-is-dns-diagram1.jpg HTTP protocol Web address (or URL) Internet Explorer is the browser 41 • • • • • • • • • • • • • • • • • • • • • • • Components Specifications Processor Intel Core Duo 2GHz, i5 or i7 Intel Centrino; Intel Celeron AMD AMD64; AMD Turion Video Card 2 Screen; Gamming Memory 2 Gig at least Floppy Disk Drive Not used any more Hard Drive Desktop – 150 GB Laptop – 80 GB CD, DVD, R/RW CD/DVD – Re-Writeable Networking Wired – Ethernet Card Wireless – 802.11g Warranty ? Software Operating System Office Products Free-Ware Anti-Virus Monitor LCD Printer Color or not If color want high dpi Many colors • • • • • • • • 48 • • • • A computer virus is an actively infectious program that can erase data and/or alter the way your computer works Worms and Trojan horses are other types of infectious programs, but all are bad Computer viruses are spread through email, and/or infected floppy disks Windows does not include an antivirus program; i.e., you must buy it separately and update it frequently Should you get antivirus software? 50 • Create a self-extracting file from the archive that does not require supporting software 51 • • • • •