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  2. List of telephone switches - Wikipedia

    en.wikipedia.org/wiki/List_of_telephone_switches

    Processor read/write scratch memory (called CALL STORE) was implemented using a magnetic core variant called Ferrite Sheet. Program and Data Store (used to store Software and infrequently changed data) was implemented using a technology called piggy back twistor - in modern parlance a write once, read many times non-volatile memory system).

  3. DB Class 103 - Wikipedia

    en.wikipedia.org/wiki/DB_Class_103

    The first serial type Class 103.1 was put into service on 27 May 1970. DB planned to introduce a new Intercity system with fast first class connections between major cities in autumn of 1971, so the specification sheet demanded Class 103.1 to be capable of pulling a 400-tonne (390-long-ton; 440-short-ton) train at 200 km/h (120 mph).

  4. Bell 103 - Wikipedia

    en.wikipedia.org/wiki/Bell_103_modem

    The Bell DataPhone 300 used the same protocol as the Bell 103. This modem is from 1978. The Bell 103 modem or Bell 103 dataset was the second commercial modem for computers, released by AT&T Corporation in 1963. [1] [2] It allowed digital data to be transmitted over regular unconditioned telephone lines at a speed of 300 bits per second.

  5. BC108 family - Wikipedia

    en.wikipedia.org/wiki/BC108_family

    All types have a maximum collector current of 100 mA, except that the original Philips tentative data dated 4.4.1966 specified a maximum collector current of 100 mA peak (I CM) for the BC107/8/9, and Telefunken originally specified a maximum collector current of 50 mA for the BC109, but since at least 1973 all have revised collector currents of 100 mA average or 200 mA peak, except that the ...

  6. Datasheet - Wikipedia

    en.wikipedia.org/wiki/Datasheet

    A datasheet, data sheet, or spec sheet is a document that summarizes the performance and other characteristics of a product, machine, component (e.g., an electronic component), material, subsystem (e.g., a power supply), or software in sufficient detail that allows a buyer to understand what the product is and a design engineer to understand ...

  7. IEC 60870-5 - Wikipedia

    en.wikipedia.org/wiki/IEC_60870-5

    IEC 103 uses FT1.2 (defined in IEC 60870-5-1) for frame format having options of Frame with variable length, Frame with fixed length & single character similar to IEC 101. Single character is used for acknowledgments, fixed length frames are used for commands & variable lengths are used for sending data.

  8. Tetrazolium chloride - Wikipedia

    en.wikipedia.org/wiki/Tetrazolium_chloride

    Triphenyl tetrazolium chloride (TTC), or simply tetrazolium chloride (with the formula 2,3,5-triphenyl-2H-tetrazolium chloride) is a redox indicator commonly used in biochemical experiments especially to indicate cellular respiration. It is a white crystalline powder, soluble in water, ethanol and acetone but insoluble in ether.

  9. Glad that's helping. Unfortunately, the template is relying on data for US inflation that only goes back to the year 1800. If you want the template to include older data, you might want to leave a comment at Template talk:Inflation or on the talk page of one of the template editors (the last editor to update the US data was User:Pascal666).