Central Computer. A computer which conducts random drawings for On-line Lottery Games and, for Electronic Scratch Ticket games, stores and dispenses Electronic Scratch Tickets from Scratch Ticket Subsets which have been loaded into it from a Manufacturing Computer and are maintained in a secure manner.
Central Computer. At the heart of the instrument is the central computer unit - a large rec tangular box, as shown, containing the logic circuitry and memory banks on plug-in PC boards, plus two floppy-disk magnetic data stores. Fairlight state that "the CMI uses four Motorola Mr Xxxxxx Xxxxxxxxxx (left) with Fairlight's Managing Director Xxx Xxxxx at the Fairlight factory in Sydney. Xx Xxxxxxxxxx said: "We look forward to a long and en joyable relationship with Fairlight". microprocessors in its architecture." Also provided are an array of inter connection and input/output sockets, plus audio-in and audio-out facilities and the necessary analog-digital-analog converters. Audio-in can be from microphone or line, with audio outputs available to headphones, loudspeaker (20W, 80) or multiple lines. In a studio or sound laboratory situa tion, connection would normally be made to other on-the-spot audio installations. One key peripheral component is a VDU - Video Display Unit - giving a "green screen" monochrome image with very high resolution. The VDU has a variety of roles; amongst other things, it identifies and gives the user access to the programs and other facilities stored on the floppy disks and in the com puter's memory. For example, when the unit is first switched on, the graphics on the screen will indicate the memory loading routines and, this done, display the first information "page" - Page 1, Index. This may remind the user that Page 2 lists the synthesised waveforms available on a library floppy disk in the right-hand disk slot. Or the index may direct the user to Page 3, relating to the use of one or more peripheral music keyboards. Pages 4 and 5 have to do with syn thesis of waveforms by the addition of harmonics, while Page 7 allows manipulating attack, decay, level, vibrato, glissando, etc, or the sampling of real-life sounds via microphone or analog recording. Or, yet again, the composition of music by typing musical notes and instructions directly on a computer style keyboard, using the video screen to display the user's input. The synthesis of sounds by the addi tion of harmonics is a way-out exten sion of the idea behind the original Ham mond organs. By a system of slide potentiometers, the organist, in these days, could synthesise tones by adding to the 8ft fundamental selected propor tions of the 1 6ft sub-harmonic and of waveforms displayed on the VDU screen to be directly modified by means of an associated light pen. Still other pages relate...
Central Computer. The CCS central computer provided message recording and editing capability, monitored the operation of the PA/CIS system, and supported configuration management of the CCS audio equipment.
