1. Computer Systems Mrs. Butera

2. Computer Systems Hardware Software

3. Hardware The physical components that a computer is made of Central Processing Unit (CPU) Main Memory (RAM) Secondary Storage Devices Input Devices Output Devices

4. Hardware – Data Storage Main Memory (RAM) – temporary data storage for running applications Secondary Storage Devices – long term data storage  Hard Drive  Flash Drive (USB Drive)  CDs and DVDs  Floppy Disks

5. Hardware - Input Devices Input is any data the computer collects from the outside world. Keyboard Mouse Scanner Digital camera Fax

6. Hardware - Output Devices Output is any data the computer sends to the outside world Monitors Printers Disk Drives CD recorders

7. Software Two Categories:  Applications  Operating Systems

8. Software – Operating Systems A set of programs that manages the computer's hardware devices and controls their processes. Most are multitasking operating systems  MS Windows 7 – Proprietary  Apple – Mac OS X - Proprietary  Linux - Open Source (Ubuntu)

9. Software – Application Software A set of programs that make the computer useful to the user. They solve specific problems or perform general operations. Word Processing Spreadsheet Database packages Video games Media players Photo Manipulation Web Development