Fayl:Regency transistor radio.jpg
Asl fayl (1 444 × 2 176 piksel, fayl hajmi: 609 KB, MIME tipi: image/jpeg)
| Camera location |  | View this and other nearby images on: OpenStreetMap |  |
|---|
| Taʼrif |
English: Regency TR-1 transistor radio, the first commercial transistor radio, which debuted October 18, 1954. Designed by Texas Instruments and IDEA, the TR-1 had a superheterodyne circuit with only 4 transistors: a combined local oscillator/mixer, two IF amplifiers, and one audio amplifier. Within one year of release, TR-1 sales approached 100,000. The transistor radio was the most popular communications device in history, with billions manufactured during the 1960s and 1970s. Courtesy of Steve Kushman. |
| Sanasi | GMT |
| Manba | Photo by uploader, taken at The History of Audio: The Engineering of Sound, an exhibition of the San Francisco Airport Museums[1] in SFO Airport, Terminal 3 from 2006-09 to 2007-05. |
| Muallif | Gregory F. Maxwell <gmaxwell@gmail.com> PGP:0xB0413BFA |
| Ruxsat (Bu faylning takror foydalanilishi) |
GFDL-1.2 |
I, the copyright holder of this work, hereby publish it under the following license:
|
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 only as published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License. | 1.2 only |
Fayl tarixi
Faylning biror paytdagi holatini koʻrish uchun tegishli sana/vaqtga bosingiz.
| Sana/Vaqt | Miniatura | Oʻlchamlari | Foydalanuvchi | Izoh | |
|---|---|---|---|---|---|
| joriy | 10:23, 2006-yil 13-noyabr | Miniatyurasi yoʻq | 1 444 × 2 176 (609 KB) | wikimediacommons>Gmaxwell | Clone out distraction in upper right corner. |
Fayllarga ishoratlar
Bu faylga quyidagi sahifa bogʻlangan:
