Computer Structure & Logic Notes 9/21/13(Overview)
Computer – An electronic device that will take data & process data into information Binary – Only language a computer understands
Computer Cycle/Machine cycle – Four parts: 1.Fetch – Go get the instructions 2.Decode – Machine code = binary code

3.Execute – Solve the instructions 4.Store – Puts the answer in temporary locations called registers (motherboard)
What is a computer system? - Five Parts (Hardware, Software, Communications, Data, Users, and procedures. 1.Hardware – The machine(four parts) 1)Input Devices – hardware used to input info, IE: Keyboard, mouse, touchscreen, touchpad, microphone, scanner, camera, biometric, bar code reader, OMR, MICR, gaming, midi, sensors 2)Processing (five parts) A)Microprocessor = Chip = CPU 1)Control Unit – the “heart”, fetches and decodes 2)ALU – “the brain”, “Arithmetic Logic Unit”, solves B)Motherboard C)Memory 1)ROM – Permanent memory, manufactured memory 2)RAM – Main memory 3)CACHE - $ D)Busses E)Registers 3)Output – Soft & Hard A)Soft – Monitor, LCD, CRT B)Hard – Printers, lasers, ink-jet, blotters 4)Storage A)Magnetic Media – Hard Drive, “C”, partition B)Optical Media – CD/DVD C)Solid State Drive D)Flash - (USB) E)Cloud – Dropbox, Skydrive, GRFID

2.Software – Program(A problem to be solved with the computer)(two parts) 1)Applications