"R & D reports' surveys the recent scientific and technical literature, highlighting papers on all matters affecting the research, development and application of microprocessorbased systems.
Applications
Betts, W R 'Multiplexing for the automotive industry' GEC Rev. Vol 2 No 1 (1986) pp 32-36 Modem automobiles are, says the author, a complex amalgam of dissimilar technologies. This, together with the range of models available in the market, creates problems for suppliers and manufacturers of vehicle electrical systems. The paper describes the implementation of the microprocessor-based Salplex Series 4000 automotive multiplexing system which it is claimed fulfils the requirements of being cheap, reliable, safe, and easy to install, maintain, test and repair.
EI-Dhaher, A H G, Hassan, T S and Safar, J A 'Microprocessor-based system for measurement of conductivity in amorphous semiconductors' J. Microcomput. Appl. Vol 9 No 2 (April 1986) pp 83-94 Hobson, L, Webb, D W and Christopher, R 'Microprocessor control of a transistorized induction-heating power supply' Int. ]. Electronics Vol 59 No 6 (December 1985) pp 735-745 Kadhim, M A H, Sadiq-Hussain, S B and Danial, K 'A new approach for the measurement of AC arc parameters using microprocessors' J. Microcomput. AppL Vol 9 No 2 (April 1986) pp 95-104 Kakatsios, B, Petrou, L and Kleftouris, D 'A microprocessor-based high availability irrigation control system' J. MicrocompuL Appl. Vol 9 No I (January 1986) pp 27-38
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Smith, M F 'A taxonomic classification of dedicated microprocessor applications' J. MicrocompuL AppL Vol 9 No 1 (January 1986) pp 63-81 Taxonomically derived characteristics of dedicated microprocessor applications may be of value in producing more efficient designs. Principles and uses of taxonomic classification are discussed and illustrated by mapping a population of devices produced by the author into the classification scheme.
Buses
evolution, similar standards for smaller processors do not exist. The paper describes an implementation of a communication protocol using singlechip microprocessors as slave devices in a master/slave system with a serial bus architecture.
S4nchez, M, M~ndez, J A, Nuflez, A 'A microprocessor-based concentrator/ distributor system' Mundo Electron~co No 161 (April 1986)pp 79-82 (in Spanish) A system that is intended to serve as an altemative to computer terminal multilinks is described. The system is built around an 8085A with an RS232C interface.
Harold, P 'Low-cost buses add industrial I/O to VME, Multibus I1' EDN Vo131 No 9 (1 May 1986) pp 175-196 Wallace, C and Koch, D 'TTL-compatible multiport bus' Computer SysL ScL Eng. Vol 1 No 1 (October 1985) pp 47-52 An experimental multiprocessor system with sixteen 32-bit processors sharing sixteen memory modules has been developed. It is estimated that peak traffic rates in the system will be of the order of 30 data transfers ps -I, requiring a 32-port bus with a cycle time not exceeding 33 ns. A nonstandard TTL-compatible bus with builtin tolerances on these requirements is described.
Communications
Burd, N C 'A communication protocol for single chip processors' J. Microcomput. AppL Vol 9 No 2 (April 1986) pp 105111 Whilst standards for communication systems such as local area networks are in an advanced stage of their
Hardware
Aguil6, J, Deschamps, J P, Schutz, E and Valderrama, E 'The future of full custom integrated circuits' Mundo Electronico No 163 (June 1986) pp 91-98 (in Spanish) Compares three types of custom ICs: gate arrays, standard cells and full custom circuits. Systems consisting of standard components are compared with equivalent systems of specific components.
Balde, | W 'Status and prospects of surface mount technology' Solid State Tech. Vol 29 No 6 (June 1986) pp 99-103 Bridge, A 'DSP chips multiply fast' Systems Int. (June 1986) pp 37-38 Dedicated digital signal processor (DSP) chips are being accepted enthusiastically by designers and the market for these products is booming. Single-chip DSPs are analysed in the article and potential applications surveyed.
microprocessors and microsystems