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High-level languages: The next technology 高级语言:下一个技术
Microprocessors
Pub Date : 1978-10-01 DOI: 10.1016/0308-5953(78)90166-6
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引用次数: 0
Unified elementary function generator 统一初等函数发生器
Microprocessors
Pub Date : 1978-10-01 DOI: 10.1016/0308-5953(78)90161-7
Michael Andrews, Thomas Mraz

Software for the CORDIC algorithm as applied to microprocessors is described. For applications sensitive to memory but insensitive to speed, CORDIC can be used as a universal subroutine to generate several elementary functions. The universality of the actual code applies to each of the elementary functions. The only difference for each function remains in the argument reduction and parameter scaling. An example for generating sine and cosine functions on a 6800 microprocessor is described.

描述了应用于微处理器的CORDIC算法的软件。对于对内存敏感但对速度不敏感的应用程序，可以将CORDIC用作通用子例程来生成几个基本函数。实际代码的通用性适用于每一个基本函数。每个函数的唯一区别在于参数减少和参数缩放。给出了在6800微处理器上生成正弦和余弦函数的示例。
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引用次数: 2
Motorola microforum 摩托罗拉微型论坛
Microprocessors
Pub Date : 1978-10-01 DOI: 10.1016/0308-5953(78)90176-9
Alan Pipes
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引用次数: 0
Motorola microforum
Microprocessors
Pub Date : 1978-10-01 DOI: 10.1016/0308-5953(78)90177-0
Alan Pipes
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引用次数: 0
Automation — friend or foe? 自动化是敌是友?
Microprocessors
Pub Date : 1978-10-01 DOI: 10.1016/0308-5953(78)90173-3
Gareth Jones
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引用次数: 0
Design techniques with microprocessors 使用微处理器的设计技术
Microprocessors
Pub Date : 1978-10-01 DOI: 10.1016/0308-5953(78)90160-5
Martin Whitebread

Before any design or development activities can take place on a microprocessor project, some essential preparations have to be made. First, the objective of the project, which is really the customer's objective, must be fully documented. It is no use designing the perfect answer to the wrong problem.

Second, various operational, functional and system specifications are needed. Before design and development begins, each and every subsystem should be specified. The relationships of hardware and software must be defined, as should, surprisingly enough, the maintenance and support needed. Difficulties of support may make the design untenable. Finally, a mechanism will be needed to implement changes in specification as they occur and also to feed back any difficulties from the design and development unit. It is only then that a project is ready for design and development work.

The control of microprocessor projects is made easier by the use of comprehensive systems specifications. Mechanisms will be needed to report changes in specifications or design up and down the chain of command.

There are considerable problems of control caused by the very nature of microprocessor activity. There is a need for the skills of hardware design and development and similarly for software production. The careful control of these two and the organization of testing facilities is a full-time task for a project manager. The end result of this is the identification of five skills: project management, systems design, programming, electronics design and electronics assembly.

To take a team made up of these mixed, abilities into a totally alien environment would be to court disaster. The novice team will need training, support and above all information. Success centres around the quality of the subsystem specifications and the ability of the project team to carry them through.

在对微处理器项目进行任何设计或开发活动之前，必须做一些基本的准备工作。首先，项目的目标，也就是客户的目标，必须被完整地记录下来。为错误的问题设计完美的答案是没有用的。其次，需要各种操作、功能和系统规范。在设计和开发开始之前，应该指定每个子系统。必须定义硬件和软件之间的关系，令人惊讶的是，还必须定义所需的维护和支持。支持的困难可能使设计站不住脚。最后，需要一种机制来实现规范中的更改，并反馈来自设计和开发单元的任何困难。只有这样，项目才可以进行设计和开发工作。通过使用全面的系统规范，微处理器项目的控制变得更加容易。将需要一些机制来报告规范或设计的变化，并自上而下地向命令链汇报。由于微处理器活动的性质，存在着相当多的控制问题。需要硬件设计和开发的技能，同样也需要软件生产的技能。对于项目经理来说，仔细控制这两者并组织测试设施是一项全职任务。这样做的最终结果是确定五种技能:项目管理、系统设计、编程、电子设计和电子组装。将一个由这些混合能力组成的团队带入一个完全陌生的环境将会招致灾难。新手团队需要培训、支持，最重要的是需要信息。成功的中心是子系统规范的质量和项目团队执行它们的能力。
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引用次数: 0
More A/D microcomputers 更多的A/D微型计算机
Microprocessors
Pub Date : 1978-10-01 DOI: 10.1016/0308-5953(78)90198-8
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引用次数: 0
Analogue I/O board for Z80s 模拟I/O板的z80
Microprocessors
Pub Date : 1978-10-01 DOI: 10.1016/0308-5953(78)90183-6
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引用次数: 0
Racing cars 赛车
Microprocessors
Pub Date : 1978-10-01 DOI: 10.1016/0308-5953(78)90199-X
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引用次数: 0
Microdraughts Microdraughts
Microprocessors
Pub Date : 1978-10-01 DOI: 10.1016/0308-5953(78)90186-1
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引用次数: 0
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