@article{oai:soar-ir.repo.nii.ac.jp:00013045,
 author = {坂口,  博巳},
 journal = {信州大学工学部紀要},
 month = {Dec},
 note = {In this paper, the relation between stabilty, accuracy of analog computing system and characteristics of the feedback operational amplifier are discussed and the aim is to get rid of ambiguity in the case of accuracy estimation. It can be said that accuracy of a hybrid computer or, more precisely do we call it in other words, "hybrid analog-digital computer" in which both the techniques are combined in one system, (and the objective of which is statistical, biological data procession and so forth) depends mainly on analog system such as a comparator, analog switches, adder and intergrater. We can say that analog computing system has ambiguity when we evaluate accuracy, on the other hand, digital system has concept such as "number of bits," which is convenient to estimate accuracy, and the more logic elements a system has the more accurate it is if these logic elements have high quality. On making up combined analog-digital system, it is important to specify stability, accuracy and frequency limitation of analog computing system. Here, author tried to specify these characteristics from a slightly different point of view from usual. As to accuracy, it was concluded that error specification in the case of solving nth order diffrtrential equation, was essentially based on that of solutions of the 2nd order differential equation. And author dealt with a single operational amplifier and a system of circle test as accuracy specification., Article, 信州大学工学部紀要 27: 171-191 (1969)},
 pages = {171--191},
 title = {アナログ演算精度および安定度,周波数限界について},
 volume = {27},
 year = {1969}
}