摘要:

The explosion started with germanium devices, which were quickly eclipsed by silicon. The subsequent developments were the bipolar integrated circuit and the emergence of metal-oxide semiconductor techniques which could well be supplanted in some applications by charge-coupled devices.

DOI:10.1049/ree.1975.0104

出版商:IERE    

年代:1975

数据来源: IET

摘要:

The purpose of university education in electronics is discussed in the light of the requirements of industry. The role of postgraduate experience courses is considered, particular reference being made to the problems which the Bosworth scheme encountered

DOI:10.1049/ree.1975.0105

出版商:IERE    

年代:1975

数据来源: IET

摘要:

Components produced pre-war, during wartime, after the war and the current scene are dealt with successively, showing how requirements for equipment were met. Future developments will lie in the full exploitation of microelectronics.

DOI:10.1049/ree.1975.0106

出版商:IERE    

年代:1975

数据来源: IET

摘要:

Quantum electronics led to the development of stimulated emission devices, first the maser and then the laser. The latter has made possible many applications in optical electronics, the most important of which are in communication using optical fibres.

DOI:10.1049/ree.1975.0107

出版商:IERE    

年代:1975

数据来源: IET

摘要:

The growing demand for increased world-wide communications has stimulated and been stimulated by technological developments. The past, present and future interrelations of cables, h.f. radio, communications satellites and tropospheric scatter systems are surveyed.

DOI:10.1049/ree.1975.0108

出版商:IERE    

年代:1975

数据来源: IET

摘要:

Marine mobile radio was a well established international service when the Institution was founded. Land mobile in contrast, was in its early conceptual stage. Pioneered just before and during the war, its large-scale development began in the 1950s. There are now 200,000 vehicles equipped in the UK alone but this represents less than 2% of all vehicles and great scope remains for further expansion and innovation.

DOI:10.1049/ree.1975.0109

出版商:IERE    

年代:1975

数据来源: IET

摘要:

The development of efficient cathode-ray tubes was the key to the initiation of television broadcasting. Typical circuits and their evolution both for monochrome and for colour are described, reference also being made to the problems of standards. Future developments such as video recording. Teletext and cable television are reviewed.

DOI:10.1049/ree.1975.0110

出版商:IERE    

年代:1975

数据来源: IET

摘要:

The evolution of television broadcasting over the years is surveyed and the reasons for decisions on standards discussed. Television engineering today is increasingly the design of systems that no longer require engineering skills to operate large numbers of analogue controls.

DOI:10.1049/ree.1975.0111

出版商:IERE    

年代:1975

数据来源: IET

摘要:

Developments in broadcast and communications receiver design are shown to have been governed by the need to conserve the use of the frequency spectrum. Future trends in m.f. broadcasting may be based on a type of s.s.b. while stereo broadcasting in this band is a possibility. The use of microwaves and satellites will present challenges in engineering these techniques to meet growing spectrum congestion.

DOI:10.1049/ree.1975.0112

出版商:IERE    

年代:1975

数据来源: IET

摘要:

The author recalls some milestones in the development of one of the principal hyperbolic navigational aids, the Decca Navigator. The origins of two other aids, Loran C and Omega are touched on briefly and mention is made of the future use of navigational satellites.

DOI:10.1049/ree.1975.0113

出版商:IERE    

年代:1975

数据来源: IET