Category Archives: 1967

LOGO

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logoFrom LOGO promotional material:

The fun and easy programming language for all ages. Yes the turtle that draws! Beginners can learn it within minutes, yet LOGO is far from a simple language. It is as powerful as any other language. The language was based on LISP and designed to teach both young and old to program. Because it gave immediate feedback, this was very appealing to users unfamiliar with computers.

Logo is a unique piece of software. In the purest sense, Logo is a programming language; it is a full-featured computer language derived from LISP, the language of artificial intelligence. More important, however, Logo is a language for learning. It is the right tool to teach the process of learning and thinking. Logo provides an environment where students assume the role of teacher.

Pacemakers

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pacemaker3An “artificial pacemaker” is a small, battery-operated device that helps the heart beat in a regular rhythm. Some are permanent (internal) and some are temporary (external). They can replace a defective natural pacemaker or blocked pathway.

A pacemaker uses batteries to send electrical impulses to the heart to help it pump properly. An electrode is placed next to the heart wall and small electrical charges travel through the wire to the heart.
Most pacemakers are demand pacemakers. They have a sensing device. It turns the signal off when the heartbeat is above a certain level. It turns the signal back on when the heartbeat is too slow.