computers are changing the world and everywhere

we use tech daily

how do computers work?

what makes a computer?

how info is represtented?

different parts of computer

what code is

tools are made to solve problems

inventions to remove manual work

machine can help us in thinking. solving equations

machines needed to manipulate info.

4 diff tasks to make a computer:

computers were as big as rooms

computers were basic calcs

now we can use them to play games or control robots

types of input:

storage:

output:

computers work on ones and zeros

wires and cirtuits carries all electrictiy

electric current can create yes or no

binary is 0/1

any number can be represtnted by 0 or 1s

32 wires can store from 0 to billion numbers

types of info can be saved:

colors can be represtnted by numbers

waveform can be saved as numbers

circuits take signal ON or off

multiple signals can be combined and if both signals are 0 then result is 0

you can make an adder circuit where it adds both numbers. you can make more than one adder

8 bit add adder adds by giving signals into the circuit

circuits can make substraction/division/multiplications

computer calculations can be made by humans but computers are faster

smaller computers are quick because circuits are smaller too

input converts physical input to binary

output takes binary and gives out as physical

such as sensors/microphones

to display each letter, computers make thousands of instructions

circuits/plugs etc. are hardware

software is inside the computer

CPU is the masterchip that controls other computer hardware

it has circuits to make simple math to send and receie

CPU knows which commands to do

CPU tells cirucuit to add, then sends to memory

binary commands stored in memory

binary code controls all hardwares

programming languages is changed to binary

operating system manages how software controls the hardware

OS controls all software