I’ve been out of programming since the mid 1980’s, so he doesn’t think my opinion matters. But so far his only preparation for his chosen career path has been playing a dozen or so XBox games over and over, updating his Facebook once in a while, and downloading porn (along with quite a few viruses). Since I am not really familiar with C++, I asked him about it… he recognized it as name of a programming language but that was it.

I know programmers of the 80’s were geeks that usually played with electronic circuits and loved math in high school, but nowadays what do real game programmers usually know about programming by the time they go to college? More than "Gears of War" cheats, right?
Fortran77 and GW-Basic were most of what I did, along with some things like EIA/ISO.

I think it is a resistor, but might be a capacitor or something else. It is beige in color with no color bands on it, i know usually a resistor has color bands on it. Also the resistor ones on the circuit board has color bands, and is called with the letter R in front of it, the one that I need to replace has a C in front of the circuit number. Can anyone tell me how to determine what to get on this? Its not long and skinny like most resistors, with color bands, its about 3/16" long and almost egg shaped. There is a 1.5 amp fuse on the board that blew, i could only find a 5 amp to replace. I know that is why it probably burnt in two, do have the correct fuse now. Thanks
On the burnt one, the best i can tell with a magnifing glass is it has this on it.
RSC 104
Some of the other ones that look the same has this on them as well, though hard to tell even with a mag glass.

I want to make sure that this 60/40 clear flux solder from radioshack (.063") won’t damage my tv. I need to replace a capacitor on my 37" lcd magnavox. Would rosin core be better?

Please help with one of my physics homework problems I am very stuck on.

"One of the main factors driving improvements in the cost and complexity of integrated circuits (ICs) is improvements in photolithography and the resulting ability to print ever smaller features. Modern circuits are made using a variety of complicated lithography techniques, with the goal to make electronic traces as small and as close to each other as possible (to reduce the overall size, and thus increase the speed). In the end though, all optical techniques are limited by diffraction.
Assume we have a scannable laser that draws a line on a circuit board (the light exposes a line of photoresist, which then becomes impervious to a subsequent chemical etch, leaving only the narrow metal line under the exposed photoresist). Assume the laser wavelength is 248 nm (Krypton Fluoride excimer laser), the initial beam diameter is 1 cm, and the focusing lens (diameter = 1.3 cm) is extremely ‘fast’, with a focal length of only 0.625 cm."

a) What is the approximate width w of the line (defined here as the distance between diffraction minima on either side of the central spot/ridge — see figure)?

b) What is the minimum resolvable line separation between adjacent lines?

c) If the laser wavelength is instead reduced to 157 nm (as is now potentially available with Argon Fluoride excimer lasers, though technical challenges remain), what is the new minimum resolvable line separation?

d) Assuming the size of the traces is the only constraint limiting the ‘areal density’ (i.e., how many components can be laid out per square centimeter), by what factor does the areal density increase in going from a writing laser with λ = 248 nm to one with λ = 157 nm?

e) Going back to the lithography system with a laser that produces light (in air) at λ = 248 nm, what minimum line separation can be expected in this case (i.e., what is the new answer to b), if the space between the lens and the photoresist is filled with water [n = 1.33 for water])? Hint: What effect does the index have on the wavelength of the light?

I have just started with bread board electronic circuit, which is nails on a wood board connected by wires and Components. I have made a flasher which is just 2 flashing LE-D’s, But is there a free program to Design and test a virtual circuit board? were you physicaly place components andConnectt them to see the results? I do have a physics program at school that does it sort what im talking bout its called crocodilee physicss" is there a free circuit board designin softwar spicilyly made for electronics, were you make and test you creationsn virtually lbeforeo actually making them in real life?

What is the full name of an Element starting with Q?
On a circuit board there are labels. For example for resistors it is "R", for diode "D", for capacitor "C" what is "Q" for?

I’m learning programming for the first time (starting with C for beginner) but I first I want to understand exactly what happens when I type the key, let’s say "b" on my keyboard and seeing letter "b" appear on a notepad for instance.

My guess is this and I’m not sure to what extent it is correct:

First, a computer is, physically speaking, nothing but electricity and circuitry (matter; electronic components such as resistors, capacitors etc and electrical power which comes from the battery/wall and finally the way all these are connected to one another)

1. The keyboard, being an electronic device, needs electricity in order to work so it is powered by the computer through the USB port.

2. By pressing any key ("be" in our case), I’m actually closing a circuit which makes some current/voltage flow (high for 1 and low for 0)

3. Some programs (Operating system which then communicates to notepad God knows how) convert this series of high’s and low’s or 0’s and 1’s into what I see on my screen as letter "b" on the notepad.

Am I close to the reality of computing?

I mean how does the computer know that I have actually pressed the key "b" on the keyboard and not "a", does every key send some sort of special current or something? This part I need clarifying the most!

Does this have anything to do with "Hex"?

Thank you.
where does the processor come into play in all of this? my processor is 2 GHz, what does this mean in terms of typing and seeing something on the screen?

I have been interested in building electronic circuits for a long time, but the diagrams would baffle me. i understand a bunch now but i see the ground wire symbol and wonder "what do i do with that?". so if im building a circuit that connects to the battery where do i connect the ground to? the negative end? the actual ground? idk please help!

Hello, all –

I am looking to build a simple sound activated switch for my Canon XT DSLR camera. The camera has a jack (3/32" stereo) that is wired in this way –http://farm1.static.flickr.com/146/359549791_83d835b78a.jpg

Hooking up a simple wire to the jack via a plug and closing the circuit will fire the shutter, so the jack has a current running across it. The current its, I think, 3.5V at .5A (i’ll try to confirm that, the lack of a multimeter is yet again haunting me).

I have a decent competency in reading circuit diagrams /soldering. All this has to do is close a circuit once there is a loud sound (Not fire a flash, etc).

My biggest qualm is hooking something with voltage up to a live jack — guides how to modify one of the following circuits would be best, or a separate diagram/description would work too.

http://www.electronic-circuits-diagrams.com/audioimages/9.gif

http://www.hiviz.com/tools/triggers/SNDTRIG.GIF (more me-friendly).

Thanks for your help!
something along these lines: http://www.radioshack.com/product/index.jsp?productId=2062479?

In the circuit given here: http://www.elektronika.ba/el.sheme/fajlovi/r86.gif
"when all keys have been pressed in correct order Q7 goes high for about four seconds to drive the "unlock" circuitry (a relay driver for an automatic door opener).
Can anyone tell me how can i connect that relay driver? And how to connect LEDs (green if the keys are pressed in correct order, and Red if they are not).
Please help me to solve this problem.
Thanks!!!!!