HB 337 1st Edition Lecture 1 Outline of Current Lecture Details components of computer Hardware and software applications and current innovations Current Lecture Computer Hardware Physical parts or components of a computer o Consists of Input Output Units External Storage Devices and Central Processing Unit CPU o Input Output Examples Printer Keyboard Touch Screen Computer memory o Read Only Memory ROM Can t be written to or erased o Random Access Memory RAM Can be read from and written to but is temporary Computer Operation Steps o 1 Register Get Instructions o 2 Arithmetic Logic Unit ALU Decode Instructions o 3 Control Unit Execute Instructions These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute o 4 Data Storage Store Results Physical Device Connection Ports o Parallel 8 bit transmission o Serial Single Bit Transmission o USB Universal Serial Bus o ECP Extended Capabilities Port o IrDA Infrared Device Accessibility o Wireless No physical connectivity Key Concepts of Hardware o 1 Three main components o 2 ROM vs RAM o 3 Computer Operation o 4 PnP Software detailed instructions that control the operation of a computer system o System Software System Boot Diagnostics Maintenance Operating Systems o OS System Software that manages and controls the activities of a computer o Application Software Generic Software and Industry Software Industry Software Non integrated vs Integrated Integrated is argued to be better due to it being industry specific o Multiprocessor Interfacing 5 C s o 1 Confidence Test Each System Separately o 2 Contracts Analyze Existing Provisions o 3 Communications What How and When o 4 Comparisons Identify installed users o 5 Contingencies Plan downtime strategies Question Answers o Should software or hardware be installed first Business should install software before hardware first o What should be the cost of IT Expenditures for Maintenance and Support IT Expenditures Maintenance and Support Expenses should not exceed 1 market value o Should you pay for enhancements on your computer for extra cost No you should NOT pay extra for enhancements System The way or method of doing things o Information System Interpreting Results from Data Records Information Can help with decision making by looking at and interpreting data