Ch Review56 Software Software is … the step-by-step instructions that tell the computer what to do.
Ch Review57 Software Two categories of software: Ê Application software Ë System software
Ch Review58 Software System software is divided into three categories: Ê Operating systems Ë System utility Ì Programming language processor
Ch Review59 Software The OS supervises … the processing of application programs all computer input/output
Ch Review60 Software The term Operating System is generic.
Ch Review61 Software In Windows 95/98, “MS-DOS prompt” is the same as … “command line” “command prompt”
Ch Review62 Operating System Fundamentals Operating system (OS) … is a program that is always working.
Ch Review63 Operating System Fundamentals ROM-BIOS … provides the interface between the hardware and the OS.
Ch Review64 Operating System Fundamentals The Boot Up Process: 1. Runs a program in ROM-BIOS which does a self check. 2. ROM-BIOS checks to see if disk drive is installed. 3. Looks for boot record. 4. When proper boot record found, reads record from disk into RAM. 5. Turns control over to this program.
Ch Review65 Operating System Fundamentals Command processor … the program that the user communicates and interacts with.
Ch Review66 Operating System Fundamentals The OS utilizes two types of commands: Ê Internal Ë External
Ch Review67 Operating System Fundamentals An executable program will have a file name with one of the three following file extensions … .com .exe .bat
Ch Review68 Networks A network … is two or more computers connected together enables users to communicate and share resources
Ch Review69 Networks Two kinds of networks: Ê LAN Ë WAN