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AMPEX quadruplex VR-1000A, the first commercially released video tape recorder in the late 1950s; quadruplex open-reel tape is 2 inches wide The first portable VTR, the suitcase-sized 1967 AMPEX quadruplex VR-3000 1976 Hitachi portable VTR, for Sony 1" type C; the source and take-up reels are stacked for compactness. However, only one reel is ...
The Mobira Cityman 150, Nokia's NMT-900 mobile phone from 1989 (left), compared to the dual-band GSM Nokia 1100 phone from 2003. [1]NMT (Nordic Mobile Telephony) is an automatic cellular phone system specified by Nordic telecommunications administrations and opened for service on 1 October 1981.
Philco was founded in 1892 as Helios Electric Company. [6] From its inception until 1904, the company manufactured carbon-arc lamps.As this line of business slowly floundered over the last decade of the 19th century, the firm experienced increasingly difficult times.
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The Tegra APX 2500 was announced on February 12, 2008. The Tegra 6xx product line was revealed on June 2, 2008, [1] and the APX 2600 was announced in February 2009. The APX chips were designed for smartphones, while the Tegra 600 and 650 chips were intended for smartbooks and mobile Internet devices (MID).
Google Pixel is a brand of portable consumer electronic devices developed by Google that run either ChromeOS or the Pixel version of the Android operating system.The main line of Pixel products consists of Android-powered smartphones, which have been produced since October 2016 as the replacement of the older Nexus, and of which the Pixel 9, Pixel 9 Pro and Pixel 9 Pro XL are the current models.
As with the 1301, there is a Model 2 which doubles the capacity by stacking two modules. The IBM 1302 Model 1 leased for $5,600 per month or could be purchased for $252,000. Prices for the Model 2 were $7,900 per month or $355,500 to purchase. The IBM 7631 controller cost an additional $1,185 per month or $56,000 to purchase.
In comparison, petrol fuel has an energy density of 32.4 MJ/L or 9000 Wh/L. [97] Commercial specific energies range from around 0.5 to 15 Wh/kg . For comparison, an aluminum electrolytic capacitor stores typically 0.01 to 0.3 Wh/kg , while a conventional lead–acid battery stores typically 30 to 40 Wh/kg and modern lithium-ion batteries 100 to ...