RO94190B1 - Tariff device for annual long-distance telephone exchange - Google Patents

Tariff device for annual long-distance telephone exchange

Info

Publication number
RO94190B1
RO94190B1 RO121097A RO12109785A RO94190B1 RO 94190 B1 RO94190 B1 RO 94190B1 RO 121097 A RO121097 A RO 121097A RO 12109785 A RO12109785 A RO 12109785A RO 94190 B1 RO94190 B1 RO 94190B1
Authority
RO
Romania
Prior art keywords
microcomputer
transistor
interface
telephone exchange
printer
Prior art date
Application number
RO121097A
Other languages
Romanian (ro)
Other versions
RO94190A2 (en
Inventor
Vasile Maniutiu
Nicolae Albu
Original Assignee
Directia Judeteana De Posta Si Telecomunicatii
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Directia Judeteana De Posta Si Telecomunicatii filed Critical Directia Judeteana De Posta Si Telecomunicatii
Priority to RO121097A priority Critical patent/RO94190B1/en
Publication of RO94190A2 publication Critical patent/RO94190A2/en
Publication of RO94190B1 publication Critical patent/RO94190B1/en

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Abstract

Inventia se refera la un dispozitiv pentru tarifare în centrala telwefonica manuala interurbana, care include câte o interfata între un microcalculator si câte o miniimprimanta afectate unor comutatoare proproii pozitiilor centralei si la a caror actionare comanda înscrierea timpului la miniimprimanta corespunzatoare, circuitul de selectie a accesului microcalculatorului la interfata dorita, fiind formatp dintr-un releu care cupleaza sau decupleaza alimentarea interfetei actionat de microcalculator, prin intermediul unor diode si o rezistenta care vor aduce în baza unui tranzistor o tensiune pozitiva sau negativa functie de comanda de pe firul respectiv , tensiune care va bloca sau satura tranzistorul si ca urmare releul plasat în colectorul tranzistorului va fi eliberat sau atras.The invention relates to a charging device in the inter-urban manual tel- ephone center, which includes an interface between a microcomputer and a mini-printer affected by some switches of the positions of the boiler, and whose operation controls the registration of the time at the corresponding mini-printer, the circuit for selecting the access of the microcomputer at the desired interface, being formed from a relay that couples or disables the power supply of the interface driven by the microcomputer by means of diodes and a resistor that will bring on the basis of a transistor a positive or negative voltage depending on the command on that line, block or saturate the transistor and as a result the relay placed in the transistor collector will be released or attracted.

RO121097A 1985-12-12 1985-12-12 Tariff device for annual long-distance telephone exchange RO94190B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RO121097A RO94190B1 (en) 1985-12-12 1985-12-12 Tariff device for annual long-distance telephone exchange

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RO121097A RO94190B1 (en) 1985-12-12 1985-12-12 Tariff device for annual long-distance telephone exchange

Publications (2)

Publication Number Publication Date
RO94190A2 RO94190A2 (en) 1988-03-30
RO94190B1 true RO94190B1 (en) 1988-03-31

Family

ID=20118445

Family Applications (1)

Application Number Title Priority Date Filing Date
RO121097A RO94190B1 (en) 1985-12-12 1985-12-12 Tariff device for annual long-distance telephone exchange

Country Status (1)

Country Link
RO (1) RO94190B1 (en)

Also Published As

Publication number Publication date
RO94190A2 (en) 1988-03-30

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