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What is functions of modem?
Function Of Modem Is Modulation And Demodulation
What is the computer component that is essential to computer communication that Dennis C. Hayes invented?
He invented the PC modem. I remember the Hayes brand well I have been in I.T for 25 years Visit my PC help site http://www.pchelphq.com/
Three broad classifications of peripheral devices?
1.) Cable Modem 2.) DSl Modem 3. ) Dial-up Modem
When was first PC modem invented?
Randall Erck invented the modern modem as we know it today. There were devices similar to modems used by the military, but they were designed more for the purpose of sending encripted nuclear launch codes to various bases around the world. Erck was still in high school when he developed a device that allowed himself to play his Atari Super Pong against a Japanese Auto Worker in Osaka Japan. After many failures, mostly due to his mom shutting off the Atari when it was time to eat, he finally hit upon the design of the modem we all use today.
What is the function of DB25?
The DB25 connector was designed by Bell Labs to connect a variety of different modems to terminals. At the time the phone company owned all the wires and everything that connected directly to them, thus they owned your phone and any modem you used with a terminal to connect to tymeshare services. The 25 pin cable that connected the DB25 (DCE) on the modem to the DB25 (DTE) on your terminal was owned by you. Thus the DB25 connector on the modem was the property line that allowed you access to use the phone line for digital data via a phone company owned modem. This was eventually standardized as RS-232.It was your responsibility to set the DIP switches on your terminal to be compatible with the phone company owned modem that they supplied. The most common early modem was the 300 BAUD asynchronous full duplex modem but the 1200 BAUD asynchronous half duplex modem was also available. Both used the same DB25 but the half duplex modem used some additional wires for handshake to switch line direction, under control of the modem. There were also higher speed synchronous modems that generated clocks for your terminal, the clocks used more additional wires. All 25 pins are preassigned some modem related function in RS-232.After the law was changed to allow third party devices to connect directly to the phone line, there was much innovation and much faster modems (most asynchronous full duplex). The DB25 was still usually used to connect to these modems but it no longer defined a property line, it was just the connectors on the cable. Eventually modem companies started making cards that plugged into desktop computers and the phone line plugged into the card, making the DB25 obsolete.The DB25 and the RS-232 standard have been much misused, to connect all sorts of devices that are not modems to computers... who is the "modem" and who is the "terminal". These devices often use handshake lines in ways that are illegal by RS-232, or use lines that RS-232 reserves for special but rarely used modem functions.
What company invented the modem?
apple
Dennis c Hayes invented what?
he had invented to PC modem
What did Dennis C Hayes invent in 1977 and what does it do?
Dennis C. Hayes invented the PC modem. The objective of the PC modem was to enable computer users to connect to the Internet.
Who invented the first modem?
at & t information system,usa
Who invented the first PC modem and when?
Digital modems developed from the need to transmit data for North American air defense during the 1950s. Modems were used to communicate data over the public switched telephone network or PSTN. Analog telephone circuits can only transmit signals that are within the frequency range of voice communication. A modem sends and recieves data between two computers. Modem stands for modulate/demodulate.In 1962, the first commercial modem was manufactured - the Bell 103 by AT&T. The Bell 103 was also the first modem with full-duplex transmission, frequency-shift keying or FSK, and had a speed of 300 bits per second or 300 bauds.The 56K modem was invented by Dr. Brent Townshend in 1996.
What were some inventions in 1958?
The integrated circuit, modem, and laser were invented in 1958.
What did the P C Modem invented By Dennis C. HayesDo?
The modem, which is short for modulator/demodulator, "packages" data according to a certain protocol for transmission to another computer, and it unpacks incoming data so the receiving computer can understand it.
What did Dennis c Hayes invent and what does it do?
In 1977 Dennis C. Hayes invented the PC Modem, which allowed for the interconnection of computer networks.
Will my DSL modem work as a cable modem?
You will need to buy a new modem that is designed for your DSL modem. This is due to the fact that the modem is designed to use the dsl signal opposed to the cable modem.
15 In 1977 Dennis C Hayes invented a computer component that is essential to computer communication What?
He invented the PC Modem. Without his invention you probably wouldn't have posted this question right now.
Who uses the modem?
One who want to connect to the internet.
How modem can be used as a sentence?
I want a more colorful modem. My modem is missing. Why can't my computer operate without a modem?
