- Email: [email protected]
Display system
New equipment Computer draughting aids The CalComp Model 942 free-cursor digitizer substitutes software for expensive hardware to achieve simplicity, flexibility and high accuracy. It is a self-contained unit having a standard drafting table as a work surface with adjustments for surface tilt and elevation. The electronics are housed in a cabinet beneath the table and the digital display is mounted on the top edge. The cursor is free of any mechanical devices, either above or below the table surface and five buttons on the cursor, control all the digitizing functions to produce a resolution of 0.001 in and an accuracy of +-0.005 in. One cursor button is used to determine the origin and another used to increment the four digit sequence counter to any desired value. The other three buttons are used for digitizing data. CalComp offers computer software to provide for a menu, co-ordinate rotation, independent x and y scaling, variable resolution (gridding), absolute/incremental operation and conversion to user co-ordinates. This approach greatly helps the operation of the digitizer and at the same time frees the users from hardware limitations. Primary markets for the digitizer are expected to be the electronic and cartographic industries. Most are likely to be sold with parts of complete graphics systems for producing original design for electronic circuits and the updating and reproduction of data files of accurate maps. The Model 905/936 drum plotting system is a fast drum plotter 36 in wide suitable for use with the DIN 'A' series paper sizes. It has three pens for automatic selection of line colour or
Display system The TD800 input and display system offers online communication and display of data on a large capacity screen. This enhances and complements Burroughs existing range of data communication terminal systems and allows users to extend input and display capabilities inexpensively to a large
Volume 5 Number 3 July 1973
The Model 7000flatbed plotting system using a four pen pressure inking system width, and is driven offline by a new simplified tape unit and controller. The plotter is driven offline by the 905 controller with the plot data held on magnetic tape. The plotter is fully compatible with most computer systems and the magnetic tape reader has a choice of either 9 or 7 track heads. The tape is read at 27.5 in/s for data densities of 800 and 556 bpi or 1600 bpi. To produce consistently high quality artwork at maximum plotting speeds the Model 7000 flatbed plotting system uses a new pressure inking system with four pens. The four liquid ink pen reservoirs have separate air pressure tubes and linked to a sophisticated electromechanical system which senses the plotter speeds and regulates the pressure to each pen as a function of speed. The pressure range is from a vacuum to one high enough to provide
number of remote locations. This c.r.t. display shows both alpha and numeric characters in a white on black background and is available with two display capacities; either 960 characters or 1920 characters with data displayed in 12 or 4 lines of 80 characters each. The terminal uses standard data communications procedures and a group of TD800's can share the same
uniform lines of 42 in/s diagonally on paper or synthetic materials. The operator can scale the plot up or down by factors of 2, 1, ½, ¼, 1/8. The Model 7000 drafting system consists of a read-only magnetic tape unit, a stored program controller, a read/ write cartridge and a high performance flatbed plotter. The 7000 system provides the operator with an ability to select from a wide range of performance without additional computer runs to generate new plot tapes. He can check that it's correct by loading the tape onto the read-only magnetic tape unit, selecting the verification mode and observing the data plotted at accelerations of up to 1.4g and speeds up to 42 in/s diagonally. (Calcomp Ltd, AMP House,
Dingwall Road, Croydon CR9 2NX, England. Tel: 01-681 0261)
modem and be called with a single address from a central computer system, minimising the amount of work required of the central computer and at the same time producing a faster response, by reducing the number of messages on a communications line.
(Burroughs Machines Ltd, Heatbrow House, Bath Road, Cranford, Hounslow, Middlesex, England. Tel.01- 759 6522)
187
Display system The TD800 input and display system offers online communication and display of data on a large capacity screen. This enhances and complements Burroughs existing range of data communication terminal systems and allows users to extend input and display capabilities inexpensively to a large
Volume 5 Number 3 July 1973
The Model 7000flatbed plotting system using a four pen pressure inking system width, and is driven offline by a new simplified tape unit and controller. The plotter is driven offline by the 905 controller with the plot data held on magnetic tape. The plotter is fully compatible with most computer systems and the magnetic tape reader has a choice of either 9 or 7 track heads. The tape is read at 27.5 in/s for data densities of 800 and 556 bpi or 1600 bpi. To produce consistently high quality artwork at maximum plotting speeds the Model 7000 flatbed plotting system uses a new pressure inking system with four pens. The four liquid ink pen reservoirs have separate air pressure tubes and linked to a sophisticated electromechanical system which senses the plotter speeds and regulates the pressure to each pen as a function of speed. The pressure range is from a vacuum to one high enough to provide
number of remote locations. This c.r.t. display shows both alpha and numeric characters in a white on black background and is available with two display capacities; either 960 characters or 1920 characters with data displayed in 12 or 4 lines of 80 characters each. The terminal uses standard data communications procedures and a group of TD800's can share the same
uniform lines of 42 in/s diagonally on paper or synthetic materials. The operator can scale the plot up or down by factors of 2, 1, ½, ¼, 1/8. The Model 7000 drafting system consists of a read-only magnetic tape unit, a stored program controller, a read/ write cartridge and a high performance flatbed plotter. The 7000 system provides the operator with an ability to select from a wide range of performance without additional computer runs to generate new plot tapes. He can check that it's correct by loading the tape onto the read-only magnetic tape unit, selecting the verification mode and observing the data plotted at accelerations of up to 1.4g and speeds up to 42 in/s diagonally. (Calcomp Ltd, AMP House,
Dingwall Road, Croydon CR9 2NX, England. Tel: 01-681 0261)
modem and be called with a single address from a central computer system, minimising the amount of work required of the central computer and at the same time producing a faster response, by reducing the number of messages on a communications line.
(Burroughs Machines Ltd, Heatbrow House, Bath Road, Cranford, Hounslow, Middlesex, England. Tel.01- 759 6522)
187