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alpchat is your : Video card - cpu - memory - Hard drive - power supply unit source
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POSTER: computer news || LEXAR MINISDHC MICOSD 4GB
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DATE:2007-02-16
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The company Of lexar included in its exposure to 3GSM world congress two new memory cards with compact size: miniSDHC with volume 4 Gb and microSD with volume 2 Gb.
A increase in the volume of cards, utilized, predominantly, in the cell phones, will allow users to write volumetric multimedia data : video- and sound recordings, photographs, a large quantity of programs and documents.
Thus, according to the estimation Of lexar, miniSDHC with volume 4 Gb sufficiently for the storage is more than 100 hours of video in format MPEG4 (3GP2), more than 1000 songs (4- minute records in format MP3), or 4000 photographs (made by camera with 3mp ). As it is simple to calculate, the card microSD with volume 2 Gb contains to 50 hours video, more than 500 songs or 2000 photographs, respectively.
The beginning of deliveries for new cards is throughout the world planned on April of the present year. lexar miniSDHC micosd 4gb |
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LEXAR MINISDHC MICOSD 4GB |
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POSTER: computer news || MICROCIRCUITS PIC16F882, PIC16F883 AND PIC16F886
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DATE:2007-02-16
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After releasing the new model of micro-controller, the company microchip technology supplemented the family Of small PIC in its lower, budget part. In spite of low price, model PIC16F882 is calculated for the wide circle of applications, since the rich collection of possibilities that it ensures. Furthermore, it gives to developers the method of reduction in the cost of devices by passage from the more expensive models to low one.
Now into family PIC16F88X, represented last fall, enter five models, which, in turn, compatible with other 28/40- contact micro-controllers PIC. Among their special features are the dual internal oscillators; to 14 channels of analog-digital conversion; the improved modules of comparators; the lowered energy consumption. All models family PIC16F88X have the standardized collection of outlying blocks and several versions of memory configuration , which, in the opinion of producer, substantially simplifies the selection of necessary model and passage from one model to another.
Some details PIC16F882:
- 3,5 KB flash- memory;
- 128 bytes energy-independent memory with the electrical erasure (EEPROM);
- Integrated check-out module;
- 11 10 discharge ATSP;
- Interfaces UART/SCI (EUSART), master mode SPI and I 2c with the option address mask; to 36 lines of input-output general purpose.
Among examples of application for this new product : device with battery power and batteries controllers ; modules, which intensively work with the analog signals; application, for which critical is the requirement of diminutiveness.
The price of micro-controllers PIC16F88 begins from 1,27 dollars. Deliveries of PIC16F882 start during April. Microcircuits PIC16F882, PIC16F883 and PIC16F886 are released in the 28- contact case of type PDIP, SOIC, SSOP and QFN, and model PIC16F884 and PIC16F887 in 40- contact type PDIP and 44- contact of type QFN and TQFP. Microcircuits PIC16F882, PIC16F883 and PIC16F886 |
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MICROCIRCUITS PIC16F882, PIC16F883 AND PIC16F886 |
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POSTER: computer news || VGA SENSOR OV5623-OV7680
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DATE:2007-02-16
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The corporation omniVision in the course of international congress 3GSM world congress, which passes during these days in Barcelona, presented two new product: VGA- sensor OV7680, executed in optical size 1/10" is 5 mega-pixel module OV5623, intended for the integration into the mobile devices.

Main advantage of the first new product, OV7680 its small sizes and the thickness, which makes possible to integrate VGA- camera into the ultrathin cell phones or ultra-portable . The thickness of module camera comprises 3 mm, in this case in it valuable objective with the fixed focus is placed.
Furthermore, it ensures the record by VGA- video with a frequency of update 30 fps . The size of pixel is 2,2 m, in the engine use the technology omniPixel2, which guarantees, as it is asserted, high sensitivity with the low illumination level.the Sizes of CSP2 module compose 4,5x4,5x3,0 mm.

The second new product is the 5,17-megapixel module of camera with the self-focusing OV5623, it is intended predominantly for the integration in cell phones and small digital cameras. The dimensions of module compose 14x14x8,75 mm, in it also is used the technology omniPixel2. In the composition of module enters ATSP, which ensures the record of personnel in the complete resolution (2592x1944) with a frequency of 7,5 fps or 60 fps in 864x768 , which makes possible to write video with DVD- quality or to examine the picture on television screen removed by camera in real time. Optical size is 1/2,5 . VGA sensor OV5623-OV7680 |
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POSTER: computer news || AS3685 LED DRIVER
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DATE:2007-02-16
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So that the built-in telephone camera could remove picture under conditions with insufficient illumination, designers add into the flash device . The ability to radiate the powerful flow of light with the small expenditures of energy, compact sizes and reliability determines the selection of light-emitting diodes as the radiating elements of flash. So that the light-emitting diode as it follows, is necessary the element, which would controle its power : the so-called driver.
the role of driver is not simple, since in the contemporary telephones of other full users of energy : color picture screen, powerful processor, sound amplifier, adapters of wireless network wiFi and Bluetooth. To ensure the work of flash, without having a effect on the functioning of other units those, first of all, accomplishing the basic task of telephone, the connection with entire matter.
The company austriamicrosystems, which is specialized in development and production of integrated circuits for the industrial, medical, communication line and automobile systems, recently presented driver AS3685. Among the key special features of new product the developer calls subminiature size and high degree of integration. Microcircuit is the finished solution for the power of light-emitting diode flash. Maximum current is 700 mA. At the given moment, AS3685 is the smallest in the world completely integrated driver, which ensures this current. Basic field of application of microcircuit for cell phones with the built-in cameras.
The sizes of AS3685 is 2 x 1,5 X 0,6 mm. together with four external components (resistors and capacitors), necessary for its work, driver occupies altogether only 14 sq. mm of the area printed-circuit board. According to the data of company, this half than in the nearest competitive decision. The test coupons of product are thus far accessible, but producer promises to begin mass production AS3685 already in the present month. AS3685 led driver |
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