The device introduced commercially in 1934 as a portable super regenerative receiver and transmitter was the "Radio Telephone," specifically developed by the American company RCA (Radio Corporation of America). It was designed for use in aviation and other mobile applications, allowing for more flexible communication options. This innovation marked a significant advancement in radio technology, paving the way for modern portable communication devices.
FM transmitter : In this case the frequency of a carrier signal is modulated/altered in accordance with that of frequency of modulating signal. TYPES OF FM TRANSMITTER: 1> directly modulated FM transmitter. 2>indirectly modulated FM transmitter. an FM transmitter is a portable device that plugs into the headphone jack or proprietary output port of a portable audio or video device, such as a portable media player, CD player, or satellite radio system. The sound is then broadcast through the transmitter, and plays through an FM broadcast band frequency. Purposes for an FM transmitter include playing music from a device through a car stereo, or any radio.
I brought my portable television set with me on the airplane.
Your program is portable if you can compile and execute it on different platforms.
my dvd player is so big that it is not portable.
There is no difference. They mean exactly the same thing. Portable code is independent of the platform while non-portable code is platform-dependant.
The Walkie-talkie
The Regency TR-1 was the first commercially available portable radio and was introduced onto the market in 1954. This first model was extremely expensive and very unreliable.
There are several different devices that can be used with an FM mp3 transmitter. Devices such as a portable CD player, portable DVD player, and satellite radios can be used with an FM mp3 Transmitter.
FM transmitter : In this case the frequency of a carrier signal is modulated/altered in accordance with that of frequency of modulating signal. TYPES OF FM TRANSMITTER: 1> directly modulated FM transmitter. 2>indirectly modulated FM transmitter. an FM transmitter is a portable device that plugs into the headphone jack or proprietary output port of a portable audio or video device, such as a portable media player, CD player, or satellite radio system. The sound is then broadcast through the transmitter, and plays through an FM broadcast band frequency. Purposes for an FM transmitter include playing music from a device through a car stereo, or any radio.
The IBM 5100 was formed in September 1975. It was the first commercially available portable computer.
To accept a stream of data packets and send it to a portable device (laptop, smart phone) receiver.
Black and Decker introduced the first portable screwdriver in 1923
Portable cassette players, commonly referred to as a walkman, was introduced July 1st, 1979. Portable cassette players were most popular in the 1980's and 1990's.
A Wireless MP3 Transmitter allows you to play portable audio devices, such as an IPOD or MP3 player through a stereo at home or through any vehicle stereo system without using cumbersome wires. You can compare several devices at the following website: http://www.nextag.com/mp3-transmitter-wireless/stores-html
The first portable typewriter was invented by Christopher Latham Sholes and was patented in 1868. It was later produced commercially by E. Remington and Sons in 1873, known as the Sholes and Glidden typewriter. This model was the first to gain widespread popularity and marked the beginning of portable typewriting technology.
The first portable DVD players were introduced in 1998 by Panasonic. While newer portable DVD players have an average screen size of 7 inches, the first portable DVD player's screen was only 5 inches.
Black and Decker