✍ Scribed by S. Charp
No coin nor oath required. For personal study only.
may be copies of existing material obtained by photographic or xerographic methods or they may be originals obtained in any of several ways compared in the book. Once the report is finished, micro-copying may be used to eliminate the bulky storage problem in large libraries. Micro-copying, projection, and filing equipment are compared for cost and use.
Before reports can be written, data must be obtained. Automatic methods can gather more data and speed experiments. Sometimes this is the only way to obtain the data. The ways in which photography can be used are summarized. Tape, disc, and wire recording equipment each has its own advantages. Using the voice recorder eliminates the assistant data recorder, speeds the experiment and allows many additional observations to be logged. In some cases audio tracks on film may be advantageous.
A problem every engineer, scientist, and physician faces today is how to find information. Punched cards such as the E-Z Sort, Keysort and others are suitable for small personal files. Business machines and large digital computers can be used for larger central files. Unfortunately the authors can not provide the final answer for a method for searching the literature and obtaining all the available references on the subject because techniques and equipment have not been perfected.
This text is a well written comparison of equipment and techniques and is supplemented by an extensive bibliography at the end of each chapter. It includes figures oil the costs of machines and materials. Since most engineers and scientists are concerned with some phase of information processing they will find this a very useful reference book.
EUGENE A. MECHLER
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