If you were interested in those topics, you'd come up with a project yourself. Actually you'd think up of a number of projects. You'd be spoiled for choice of projects if you were interested. You...

Do people learn to play a musical instrument because they want to be paid off? Learning the skill itself is the pay off. If that isn't enough, I'd suggest learning something else.

There isn't anything special about programmers that work for TV broadcasting companies. Yes, they write the programs in the same languages. If you turn on the news and see a bar chart, it may have...

The phototransistor is just a switch, the output is either the positive supply or ground. You could program a microcontroller to read the outputs and send serial data to the PC's serial port.

The...

If it's just a proof of concept project, and you're not going to be near a car park. Then IR is fine.

That's all that's needed for the sensor. The IR LED is on constantly. The output is taken from the collector of the phototransistor, which acts as a switch. When an object blocks the IR light, the...

Since that detects any sort of motion then takes pictures, you would need to look at the pictures to be sure if there was a car in the bay.
In a project like this, you would also need sensors that...

To send the data from the sensors to a PC. Isn't that what you want to do?

An IR LED and IR phototransistor will do for the car detection.
http://home.cogeco.ca/~rpaisley4/ATDetLong.GIF

You can look on http://www.ftdichip.com/ for creating a parallel or serial to USB...

An old book but this is the electronics bible.
http://www.amazon.com/Art-Electronics-Paul-Horowitz/dp/0521370957

Less advanced, but useful and easy to learn are all of Floyd's books....

Just use a GSM modem for receiving text messages. You can get one with a serial port.

Which would you rather call out over the phone, a long string of binary numbers or a short string of hexadecimal numbers?

You need a hex editor as mentioned, like
http://www.softcircuits.com/cygnus/fe/
You just convert the hexadecimal bytes to binary in your head.

You don't see them because "1" and "0" are just the symbols we have given to binary numbers. We could have called them "alphas" and "betas" or anything else instead. Asking what a 1 or 0 is ...

If you need to get ideas from other people for your own projects you musn't be very interested.

Your mobile may have a certain AT command set which would define all the information you can retrieve, via a serial connection, which might be RS-232 although Nokia usually use the FBUS protocol....

Depends on whether you want to use the mic insert on the PC or external hardware and send the voice info to the PC.
The latter is probably doable for word recognition but not translating whole...

This is one module for a particular application.
http://www.robotstore.com/store/product.asp?pid=817&catid=1600

Maybe it's just the transducers you need...

I think you're mixing up RAM with your computer's Hard Disk Space?
http://docs.info.apple.com/article.html?artnum=61131

Here's a fingerprint module you could buy. It doesn't give the price and I can't imagine it being cheap. http://www.badgestuff.com/proddetail.asp?prod=MV1210&cat=105

Read the datasheet if you want...