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 InstructionsThese 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 transmissiono Serial – Single Bit Transmissiono 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 Operationo 4. PnP- Software – detailed instructions that control the operation of a computer systemo System Software – System Boot, Diagnostics, Maintenance, Operating Systemso OS – System Software that manages and controls the activities of a computero 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’so 1. Confidence – Test Each System Separately o 2. Contracts – Analyze Existing Provisionso 3. Communications – What, How, and When o 4. Comparisons – Identify installed userso 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 valueo 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