Many people associate with the word “server” with a large expensive computer installed in a separate room, and with the constantly gloomy system administrator on duty near this farm
Far fewer users know that for a long time there have been home mini-servers on sale, weighing only about 200 grams, without moving parts (which means completely silent), costing $ 100-200. Why is this needed? In fact, the home server is a fully configured and ready-to-work mini-computer that provides users with many useful features. The technology is called NAS (Network Attached Storage), which translates as “network storage”, but the functions of modern devices go far beyond simple file storage. Continue reading
“If the aviation industry had developed as rapidly as the computing industry in the past 25 years, now a Boeing 767 would cost $ 500 and fly around the globe in 20 minutes, spending five gallons of fuel. These figures very accurately reflect the reduction in cost, increase in speed and increase the efficiency of computers. ” Scientific American 1983, No. 8. Second Generation: Transistor-Based Computers When transistors came in place of lamps, it immediately pushed all computer-related technologies. Electricity consumption has sharply decreased, the size of computers has sharply decreased, and speed has increased. Computers from monsters occupying entire floors of buildings turned first into devices the size of a closet, then into a suitcase placed on a table, then into a small box, then they became even smaller. And bugs, instead of cockroaches burnt on the contacts, turned into software errors. Continue reading
In our era of multiprocessing and distributed computing, the once seemingly important division of computers into generations has already been forgotten a little. The first generation is tube computers, the second is transistor computers, the third is integrated circuit computers, and the fourth is microprocessor-based computers.
In the beginning there were ferrite rings and electron tubes. The direct access memory, or RAM, which was called RAM (the random access memory, or simply “memory”) as a girl, consisted of ferrite rings. Each ring was stitched with several windings. The write current went along one, the read current on the Continue reading