Coding a hardware

How are all the machines coded? How are they programmed to do functions. Like how does my remote control car work? When i press right button it moves right, how is it made to do that???

They are madeto recognize high voltages and low voltages as ones as zeroes, this forms a binary language, the signals are then manipulated via logic gates and silicon chips (which are like uber logic gates).. basically the remote control sends a signal to the car, the signal is then transformed into a signal which the chip can use, it then sends out the signal needed to make the motors in the car do what you want them to do. Like some stupid car in my physics department which changes direction when you clap... the signal is controled by the variable, sound, because the resistance is changed when the noise is made to make the signal either low or high, 0 or 1, which makes all the difference... hope this helps, i'm only doing a level physics and gcse electronics, so i don't know that much... things like processors work by magic, i dont even want to try and comprehend them...

It's difficult to explain, Butmunch did a commendable job, so I'll just try to add what I can. On your RC car, I'm betting that you can move the control levers and control the speed of whatever action it preforms. This is actually an analog action, that must must be changed to binary, in order for the servos in your car to respond appropriately. The instructions that are formed from this are called PWM's (PWM stands for Pulse-Width Modulation). Just thought I'd add my 2 cents on how hardware can be programmed to kind of understand analog.

ok but how does the code go into the circuit of my car. Like, its programmed and that program is store where? and how does the program get there?

Go get a book on electronics and digital electronics.

Honestly, you need a course in
1) signal processing
2) microprocessor design and assembly programming
3) communications

Your questions are really broad - and WAY too general. A Sony remote control is not the same as a Panasonic remote, but they have some principles that are the same and we can try to explain those.

I can explain software related stuff (and a bit of hardware) but none of the communications since I haven't taken a course in signal processing.

if your truely interested inthing get one of those mad expensive Lego Mindstorm robots.



yeah those are amazingly complex, I'm sure everyone here knows that a northwood P4 for example has .09um platters, but to really know how small that is, 1 micrometer is equal to 1/1,000th of a millimeter, which is equal to 1/1,000th of a meter, so 1 platter inside a Northwood is equal to 0.00000009 meters, now the die of the P4 is about 1 1/4 mm tall so think about how many logic gates fit on that tiny little chip.

Microchips are extremely complex, it could take you 2 semesters of college (probably more) to understand them. I don't.

It takes the better part of a degree to understand them.

Are there any free courses on them(For Jr.High School Student). lol

How does the code go into the circuit? Are wires attached to it for the code to go into it? And where is the code stored in the circuit?

for jr. high, i doubt it, I know in High school in select schools(very few, mines one of them) they do have a program called the Academy of Information Technology and they have all sorts of courses within it such as programming, web design, and cisco networking. Also any high School with a decently large technology dept.(such as mine) may have classes such as consumer electronics, robotics, etc. and those go into codeing the actual hardware, especially robotics where you design and build a robot them "teach" it to walk, pick up something, etc. Its very basic controls for example it you wanted to get motor#1 to move the robot foward you'd have to calculate how long the motor would be on and program the chip to tell the motor to go on for x amount of seconds and then go off.I beleve robots can be programmed with C++(although many other ways exsist) and that program gets flashed to an onboard flash memory chip that controls the rest of the machine. Yes wires are attached, however its not going to be something nice such as USB unless you buy a kit.

Are there any good links on this subject?