Section 1 Hardware and Software

Section 1: Hardware and Software
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)
types of computers
cloud computing
digital data and bits
binary digit=bit=0 or 1=electricity OFF or ON
DATA SIZE 8 bits=1 BYTE 1 KB= 2^10 1MB= 2^20 1GB=2^30 1TB=2^40 1PB=2^50
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
Software= instructions to change data to information
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
Digital Dumping: e-waste dumps in developing countries, toxic, cyber crime, burning, pollution
physical parts: input, output, processing...
personal computers, mobile devices, mainframes, supercomputers
advantages: scale, flexibility, efficiency, multitenancy
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