INPUT: mouse, keyboard, scanner, barcode reader

OUTPUT: monitor, printer, speakers

STORAGE: (both input and output) disks, flash memory

PROCESSING: CPU (dual, quads), expansion cards (graphics, sound, NIC or ethernet)

Inside the 'box': Motherboard, CPU, cards & Slots/ports (USB, firewire, bluetooth port)

physical parts: input, output, processing...

personal computers, mobile devices, mainframes, supercomputers

advantages: scale, flexibility, efficiency, multitenancy

binary digit=bit=0 or 1=electricity OFF or ON

Do you know how to convert from binary to decimal and from decimal to binary?

DATA SPEED: outside the 'box' -bps inside the 'box'-Hz CPUs currently in GHz

GAMES: ISSUES: health: eyesight, unwilling to play outdoors, Lack of social skills

VR: Virtual Reality Good for: Games, Training pilots & doctors, design of buildings Disadvantages: eyestrain, radiation, psychological effects e.g. anxiety

SYSTEM SOFTWARE: runs the internal functions of a computer , e.g. Microsoft Windows APPLICATION SOFTWARE: programs that you use to change data to information e.g. Microsoft Excel