System 8000 link

GPIB relays

Canadian

power or sigemls and counter/timer or with a ripple and noise measurement unit. The power-switching module relays are rated by Intepro at 6 A and 240 V AC. The signal-switching module has 32 single-pole--single-throw relays. These are wetted with mercury to make them hard wearing. (Intepro

Systems Ltd, ChiMers Road, Limerick, Ireland. Tel." (061) 43611. Telex: 70110 TEST El. UK distributoz : Omnitest Ltd, Hiyhctit-fe ftouse, 411-413 Lymington Road, Hight/i//e, Christchurch, Dorset BH23 5EN, L/l<,

Tel: (042_52) 77731)

PC/S ystem8000 link Relay for power Two relay modules have been introduced by Irish firm Intepro Systems. Both modules are IEEE-488 controlled. One is for power connections and one is for signals. The user can combine signal and/or power-switching modules to form a system backplane. This provides software-controlled switching for monitoring and testing. Modules can be built into IEEE-488based test systems. Alternatively they can be used with a digital voltmeter

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Serial I/O cald~, .'a~ the Apple ![ have been introduced i,~ Canadian peripheral make;- Pure Data. The PDA 232C links ~he Apple II witi~ RS232-compatibie printers, terminals and modems. The card has three operating modes I/0, terminal am! .~emote. In the terminal mode the PDA 2_q;n ~C simulates the operation of ~ dumb terminal. The computer can theH interface with an originate modem. !n remote mode the Apple II can interface with an answer modem. Remow.mode operation also lets USCISinterlace with the computer lrom a remote location via a terminal/' computer and an originate modem. the P D A 2 3 2 ( works h~. an:, ol ii~e Apple I I's sewm qots, says Pure DatL l h e price el one ~.ard with manua[ and 1.2 rnof RS232C cable is 5165 {£110}

(Pure Data L,:d ,~'60 Ocnison .Street Markham, Ontariol Canada L3R 4HL Tel: (416) 47%2424, UK distrihdlo~ : Garingdell Sy'stems Ltd, 16/~ 7 ML',bourne House, (Thfltern Hi//, Chalfont Saint Peter, [~ucks SL9 gUt/, UK, T~!;

(0753) 883036) more than one PC can be bough~ for [:154 ($230) each. ('Z/Iog (UK) lid,

Zilog /.louse, Moorbridge Road,

Maidenhead, Berks SL6 8PL, UK. Tel: (0628) 39200: Telex: 848609)

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PCworks is a software package trom Zilog. It lets the IBM PC (or a PCcompatible micro) communicate with or transfer data to Zilog's System 8000 microcomputer. The package was developed iointly by Zilog and Touchstone Software Corporation of the US. It consists of five software modules. Two of these run on the System 8000. The other three run on the IBM PC. The price of the five software modules in PCworks is £390 ($585). Additional modules for systems with

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