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How do computer networks detect errors? Find out moreWhat is a computer network?You can do lots of things with a computer but, connect it up to other computers and peripherals (the general name given to add-on bits of computer equipment such as modems, inkjet and laser printers, and scan...
The microchip in the pen uses the pattern of reflections to store images of the words you're writing The Bluetooth antenna built into the pen transmits the stored data wirelessly and invisibly through the air. The wireless receiver in your computer picks up the Bluetooth signals and stores what...
How to learn payment systems? Why is the credit card called “the most profitable product in banks”? How does VISA/Mastercard make money? How does VISA work when we swipe a credit card at a merchant’s shop? Payment Systems Around The World Series (Part 1): Unified Payments Interface (...
To send a message to a particular pager with POCSAG, the system first transmits an initial "wakeup" message to activate every pager in the same group and then sends data to them in chunks called frames, with each pager extracting only the messages specifically addressed to it. FLEX™, ...
How does gRPC work? RPC (Remote Procedure Call) is called “remote” because it enables communications between remote services when services are deployed to different servers under microservice architecture. From the user’s point of view, it acts like a local function call. ...
The phone line transmits this information almost instantly to a fax machine at the other end. It receives the electrical pulses and uses them to control a printer. If the receiving fax hears "black", it draws a tiny black dot on the page; if it hears white, it moves along slightly, ...
Let's take a closer look at this cunning technology and find out how it works!Photo: A typical RF security gate in a shop doorway in Birmingham, England. There's another one of these on the other side of the door. Sometimes these scanners are disguised so you can't see them, but ...