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Modern dictophones as data carriers use digital modules of memory. The resource of modules of memory even at the most intensive use will make not less than several years. In such models there is no difficult tape drive mechanism.

The MCU microprocessor (AT90S853 operates through port B work of FLASH-of memory of DD1 (see the scheme electric basic PGU900100EZ). As in the processor there is a hardware support of the SPI protocol, the memory chip working under this protocol directly is connected to conclusions of the microcontroller DD2 miso, mosi, sck.

The battery for power supply of the device is connected to the X1 socket. C1 and C2 condensers serve for smoothing of pulsations on power-supply circuit which can arise at course of dynamic processes in chips.

At design of the schematic diagram, considering the analysis of entrance data and requirements to work performance, KMOP was chosen as a basic of a choice of integrated chips, and in a with it the choice of the following elements was made:

The block of entrance chains connects information communication with the ATsP block which in turn connects information communication with the block of non-volatile memory and the operating communications with the clock generator and block of the controler of record/reading.

Characteristics of the device: the self-contained unit with battery food, record time 1 hour. Provides long-term storage of the written-down information at switching off of power supply of the device. There is an of operating modes of a digital dictophone, and also governing bodies of the device modes.

The block of output chains connects information communication with the TsAP block which in turn connects information communication with the block of non-volatile memory and the operating communications with the clock generator and block of the controler of record/reading.

Has to be software squared with a ratio of the parties no more than 1: It is necessary for providing a sufficient. Software at impact on it of mechanical efforts from an laying head.