CTL Modular One Peripheral Devices · 2. Paper Tape Reader 1.32 1.32 is the CTL Device number for...

CTL Modular One Peripheral Devices CTL Modular One Peripheral Devices...........................................................................1 1.Teletypes................................................................................................................. 1 1.1.Teletype Labelled NET3.................................................................................. 1 1.2.Teletype Labelled MMI....................................................................................2 1.3.Manuals............................................................................................................ 3 2.Paper Tape Reader 1.32...........................................................................................4 1. Teletypes The Teletypes were labelled “NET 3” and “MMI” when they were used at the National Physical Laboratory. Both devices were manufactured by the Teletype Corporation of Skokie Illinois and supplied in the UK by Data Dynamics Ltd. 1.1. Teletype Labelled NET3 Does this labelling reflect the NPL network address of the Computer? This device has four prime functions; Keyboard, Printer, Paper Tape punch and Paper Tape Reader. The paper tape reader is at the left front and mechanically senses the holes in the tape. The punch is on the left of the machine, there are four clear buttons arranged in a square that are used to control it. The blank paper tape reel would sit in the slot at the top left of this picture. © Redhawk Systems Ltd 2013. Page 1 of 7 03/04/2013

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Transcript of CTL Modular One Peripheral Devices · 2. Paper Tape Reader 1.32 1.32 is the CTL Device number for...

Page 1: CTL Modular One Peripheral Devices · 2. Paper Tape Reader 1.32 1.32 is the CTL Device number for the High Speed Paper Tape Reader. 4101 Photoelectric paper tape reader. GNT Automatic

CTL Modular One Peripheral DevicesCTL Modular One Peripheral Devices...........................................................................1

1.Teletypes.................................................................................................................11.1.Teletype Labelled NET3..................................................................................11.2.Teletype Labelled MMI....................................................................................21.3.Manuals............................................................................................................3

2.Paper Tape Reader 1.32...........................................................................................4

1. TeletypesThe Teletypes were labelled “NET 3” and “MMI” when they were used at the National Physical Laboratory.Both devices were manufactured by the Teletype Corporation of Skokie Illinois and supplied in the UK by Data Dynamics Ltd.

1.1. Teletype Labelled NET3

Does this labelling reflect the NPL network address of the Computer?

This device has four prime functions; Keyboard, Printer, Paper Tape punch and Paper Tape Reader. The paper tape reader is at the left front and mechanically senses the holes in the tape. The punch is on the left of the machine, there are four clear buttons arranged in a square that are used to control it. The blank paper tape reel would sit in the slot at the top left of this picture.

Page 2: CTL Modular One Peripheral Devices · 2. Paper Tape Reader 1.32 1.32 is the CTL Device number for the High Speed Paper Tape Reader. 4101 Photoelectric paper tape reader. GNT Automatic

1.2. Teletype Labelled MMI

From memory some research work was done at NPL on Man Machine Interfaces. This device has a red CTL label on the front.

Page 3: CTL Modular One Peripheral Devices · 2. Paper Tape Reader 1.32 1.32 is the CTL Device number for the High Speed Paper Tape Reader. 4101 Photoelectric paper tape reader. GNT Automatic

1.3. Manuals

2. Paper Tape Reader 1.321.32 is the CTL Device number for the High Speed Paper Tape Reader.

4101 Photoelectric paper tape reader. GNT Automatic A/S Denmark.

CTL Badge label, power cable entry, data connector to the Modular One and the manufacturers label “Great Northern Telegraph Works Copenhagen Denmark”. The serial number is 147249.

Page 5: CTL Modular One Peripheral Devices · 2. Paper Tape Reader 1.32 1.32 is the CTL Device number for the High Speed Paper Tape Reader. 4101 Photoelectric paper tape reader. GNT Automatic

Tape reader controls; L-R, Power switch, Power indicator, the bit pattern display, direction switch and continuous/single step switch.

Page 6: CTL Modular One Peripheral Devices · 2. Paper Tape Reader 1.32 1.32 is the CTL Device number for the High Speed Paper Tape Reader. 4101 Photoelectric paper tape reader. GNT Automatic

The paper tape transport and reader head. The tape is driven from below; magnets are used to pull the cover down to help keep the tape flat. The reader head photocell sensors are mounted in the khaki coloured block left of centre.

The Logic diagram for the PTR from the manual.© Redhawk Systems Ltd 2013. Page 6 of 7 03/04/2013