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  2. List of telephone switches - Wikipedia

    en.wikipedia.org/wiki/List_of_telephone_switches

    EAX #3; ESU 3072 Line; FW1 (Four Wire 1 Toll Switch) GTD-3 EAX (Toll switch, NOT CCS7 capable although CCIS capable) GTD-5 EAX (Class 5 switch, many in use today, was the primary switch in former GTE exchanges. Now supported by Lucent.) GTD-120 Digital PABX; GTD-1000 Digital PABX; GTD-4600 Digital PABX; OMNI-S1 Digital PABX; OMNI-S2 Digital PABX

  3. List of 7400-series integrated circuits - Wikipedia

    en.wikipedia.org/wiki/List_of_7400-series...

    8-bit level translator (20) SN74GTL2003: 74x2006 1 13-bit GTL to 3.3V TTL level translator open-collector (28) SN74GTL2006: 74x2007 1 12-bit GTL to 3.3V TTL level translator open-collector (28) SN74GTL2007: 74x2010 1 10-bit level translator (24) SN74GTL2010: 74x2014 1 4-bit GTL to TTL transceiver three-state and open-collector (14) SN74GTL2014 ...

  4. List of 4000-series integrated circuits - Wikipedia

    en.wikipedia.org/wiki/List_of_4000-series...

    The following is a list of CMOS 4000-series digital logic integrated circuits.In 1968, the original 4000-series was introduced by RCA.Although more recent parts are considerably faster, the 4000 devices operate over a wide power supply range (3V to 18V recommended range for "B" series) and are well suited to unregulated battery powered applications and interfacing with sensitive analogue ...

  5. ULN2003A - Wikipedia

    en.wikipedia.org/wiki/ULN2003A

    ULN2003A pinout Simplified ULN2003A logical pinout diagram.. The ULN2003A is an integrated circuit produced by Texas Instruments.It consists of an array of seven NPN Darlington transistors capable of 500 mA, 50 V output.

  6. 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.

  7. Threshold of toxilogical concern - Wikipedia

    en.wikipedia.org/wiki/Threshold_of_toxilogical...

    The threshold of toxilogical concern (or TTC) is a method for determining the level of exposure to chemicals above which would be considered toxic, [1] in cases where data about such chemicals is scarce or non-existent.

  8. 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.

  9. ITGAE - Wikipedia

    en.wikipedia.org/wiki/ITGAE

    3682 16407 Ensembl ENSG00000083457 ENSMUSG00000005947 UniProt P38570 Q60677 RefSeq (mRNA) NM_002208 NM_008399 NM_172944 NM_001361245 RefSeq (protein) NP_002199 NP_032425 NP_001348174 Location (UCSC) Chr 17: 3.71 – 3.8 Mb Chr 11: 72.98 – 73.04 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Integrin, alpha E (ITGAE) also known as CD103 (c luster of d ifferentiation 103) is an ...