If you're were lucky enough to live in a street where lots of people had different kinds of railings, you might have discovered you could get different musical notes as you moved from house to house. Where does
Artwork: Dialup and broadband use the same phone line, but broadband uses it much more efficiently. Where dialup sends only one voice or data signal down one channel, broadband divides the line into multiple channels, each of which can send data in parallel. Most channels (red) are used f...
During automatic pricing, the system takes into account the sequence specified by the counter. 3) Condition type The condition type is used for different functions. In pricing, for example, the condition type lets you differentiate between different kinds of discount; in output determination,...
In this article I try to explain why Haskell keeps being such an important language by presenting some of its most distinguishing features and detailing them with working code examples.The presentation aims to be self-contained and does not require any previous knowledge of the language. I will ...
The effectivity of different kinds of power plants varies widely both with specific location, cost of input and the method used, but usually the hydroelectric damns build in good terrain would take a lead, especially considering that they can work for more than century. Which wind or solar ...
White areas of the page reflect a lot of light; black areas reflect little or none. The light reflects off the page into a light-detecting CCD (charged-coupled device). The CCD turns the analog pattern of black and white areas on the page into a numeric (digital) pattern of binary ...
Even if you do, isn't it just possible someone else could hack into the systems you use and do all kinds of damage? Now more and more people are moving their lives online, banks,ecommerce(shopping) websites, and others are having to take security far more seriously, no longer relying ...
Here's the inside of an old-style Logitech ball mouse: Switch detects clicks of left mouse button. Switch for middle button. Switch for right button. Old-style connection to PS/2 socket on computer. Chip turns back-and-forth (analog) mouse movements into numeric (digital) signals computer ...
When you take a digital photo or stare into your webcam, light zooms into the lens. This incoming "picture" hits the image sensor, which breaks it up into individual pixels that are converted into numeric form. CCDs and CMOS chips, the two kinds of image sensor, do this job in slightl...
Aplanecan whizz you round the world, which is pretty amazing, but that's all it can do for you. Acomputer, on the other hand, is a wonderful general-purpose machine that can do all kinds of things from forecasting the weather to calculating your tax return. What makes it so different...