IBM 1711
Encyclopedia
The IBM 1711 Data Converter was part of the IBM 1710
process control
computer. The 1711 contained an analog-to-digital converter
that accepted signals from the IBM 1712
Multiplexer and Terminal Unit that were between -50 milli
volt
s and +50 millivolts and converted them into signed, four decimal digit numbers that were stored in the 1710s core memory.
The 1711 featured a real time clock that could place the current hour and minute into storage, again as a 4 digit number. On the 1711's control panel, there was a bank of seven decimal digit manual entry switches that could be read by the computer. The 1711 also contained address circuitry for the IBM 1712 Multiplexer.
Optional 1711 features included contact sense, contact operate, analog output, interrupt
, and process branch indicators.
While all this and more would fit comfortably on a single IC
today, the IBM 1711 occupied a three section rack cabinet.
IBM 1710
The IBM 1710 was a process control system that IBM introduced in March 1961. It used either a 1620 I or a 1620 II Computer and specialized I/O devices .The IBM 1620 used in the 1710 system was modified in several ways, the most obvious was the addition of a very...
process control
Process control
Process control is a statistics and engineering discipline that deals with architectures, mechanisms and algorithms for maintaining the output of a specific process within a desired range...
computer. The 1711 contained an analog-to-digital converter
Analog-to-digital converter
An analog-to-digital converter is a device that converts a continuous quantity to a discrete time digital representation. An ADC may also provide an isolated measurement...
that accepted signals from the IBM 1712
IBM 1712
The IBM 1712 Multiplexer and Terminal Unit was part of the IBM 1710 process control computer. The Terminal Unit provided the physical connections between factory wiring and the computer. The 1712 could support up to 300 separate wire pairs. Signal types supported included analog input, analog...
Multiplexer and Terminal Unit that were between -50 milli
Milli
Milli is a prefix in the metric system denoting a factor of one thousandth . Adopted in 1795, the prefix comes from the Latin mille, meaning one thousand ....
volt
Volt
The volt is the SI derived unit for electric potential, electric potential difference, and electromotive force. The volt is named in honor of the Italian physicist Alessandro Volta , who invented the voltaic pile, possibly the first chemical battery.- Definition :A single volt is defined as the...
s and +50 millivolts and converted them into signed, four decimal digit numbers that were stored in the 1710s core memory.
The 1711 featured a real time clock that could place the current hour and minute into storage, again as a 4 digit number. On the 1711's control panel, there was a bank of seven decimal digit manual entry switches that could be read by the computer. The 1711 also contained address circuitry for the IBM 1712 Multiplexer.
Optional 1711 features included contact sense, contact operate, analog output, interrupt
Interrupt
In computing, an interrupt is an asynchronous signal indicating the need for attention or a synchronous event in software indicating the need for a change in execution....
, and process branch indicators.
While all this and more would fit comfortably on a single IC
Integrated circuit
An integrated circuit or monolithic integrated circuit is an electronic circuit manufactured by the patterned diffusion of trace elements into the surface of a thin substrate of semiconductor material...
today, the IBM 1711 occupied a three section rack cabinet.