So the sum is zero and the carry is one, which means the overall result is 10 in binary or 2 in decimal. Half adders can't really do any more than this, but if we put a few more logic gates together, we can make what's called a full adder circuit that does harder sums with ...
It works because these two different metals have atoms with different abilities to hold on to the electrons they contain. The zinc atoms in the nail lose their electrons (blue, e), which flow out through the circuit you've made to the copper atoms in the coin. This flow of electrons mak...
In each single step we have to check for Nothing, in that case we directly short circuit to an overall Nothing result value. In the Just case we proceed to the next processing step.This kind of handling is repetitive and buries the actual intention under a lot of boilerplate. As Haskell...
The two drives look strikingly similar and work exactly the same way (both are made by Toshiba), but the iPod drive is even more of a miracle of miniaturization! The green-blue circuit board you can see in the first photo includes the disk controller, a circuit that allows the computer ...
The two systems are typically (but not always) connected. The orange circles are valves that open and close so that either the heating or cooling circuit is working, but not both at the same time.How air conditioners can harm the environment Photo: An "ozone friendly" air conditioner ...
We dip the two electrodes into the solution and connect them up into a circuit so the copper becomes the positive electrode (or anode) and the brass becomes the negative electrode (or cathode). When we switch on the power, the copper sulfate solution splits into ions (atoms with too few...
Most modern transistor radios have at least two antennas. One of them is a long, shiny telescopic rod that pulls out from the case and swivels around for picking up FM (frequency modulation) signals. The other is an antenna inside the case, usually fixed to the main circuit board, and it...
Back in the 1960s, Intel co-founder Gordon Moore realized that the power of computers doubles roughly 18 months—and it's been doing so ever since. This apparently unshakeable trend is known as Moore's Law.Photo: This memory chip from a typical USB stick contains an integrated circuit that...
Some forms of active noise reduction go even further by using multiple reference microphones. Some also have a separate ("error") microphone to sample the final sound output and send feedback to the noise-reduction circuit. If the output is too noisy, the circuit can adjust how it's cancell...