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Three broad classifications of peripheral devices?
1.) Cable Modem 2.) DSl Modem 3. ) Dial-up Modem
Who invented modem?
Mariama Ali
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 do Dennis C Hayes device do?
It was an inexpensive modem (modulator-demodulator) to connect a terminal or home computer via RS-232 into the phone line. Later ones came as an adapter card inside the home computer, eliminating the RS-232 link. One major advantage of Hayes modems over others of the time was the escape sequence "+++" and the easy to use Hayes "AT" command set, allowing complete control of the modem and connection through the same link as used for normal data, eliminating physical controls and switches on the modem. This was so popular it was soon copied by other modem makers, becoming a de-facto standard.
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 an intelligent modem?
a modem that has extra functions such as automatic answering and dialing is called intelligent modem
What function does a modem provide in communication between computers?
FUNCTIONS OF MODEM
What are the functions of the MODEM?
Modulate Demodulate
What are the functions of GSM modem?
it is connected with vsystem for communication
How do you connect 56k fax modem with DSL?
The short answer is that you don't. Sure, you can plug a fax modem into a phone line that supports DSL, but it is just using the dial-up capabilities of the line and not the DSL capabilities. A regular modem like that functions like a telephone and transmits in the audible frequency range and not the higher DSL frequencies. With DSL, you'd use a DSL modem (with or without an included router), not a dial-up modem.
What is inserted in an AMR slot to provide sound functions?
An audio module or sound card is typically inserted into an AMR (Audio/Modem Riser) slot to provide sound functions. This module enhances the audio capabilities of a computer, allowing it to produce sound through speakers or headphones. The AMR slot was designed to support audio and modem functions, integrating them into the motherboard for better performance and efficiency.
Can a modem have a dual role as modem and sound card?
A modem typically serves as a device that modulates and demodulates signals for internet connectivity, while a sound card is designed to process audio signals for output and input. While some multifunction devices might combine capabilities, a standard modem does not have the hardware or functionality to serve as a sound card. Therefore, while you might find integrated devices with both functions in some cases, a modem itself cannot inherently perform the role of a sound card.
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.
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?
Is an HDA modem a fax modem?
no
Is a modem really a modem?
If it's modulates and demodulates a signal then yes, it's a modem.
