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十、电脑部分电脑部分主要由两块集成电路(IR3R20A、T2D62504P)和机芯组成。JC_(501)(IR3R20A)的各脚功能如下:(1)输入+;(2)负反馈输入;(3)滤波;(4)第一输出。以上是一个运算放大器。接入C_(505)、R_(501)、R_(505)、C_(508)、R_(504)、R_(506)、C_(507),用来控制负反馈量以改变各种状态的增益。(5)接地;(6)第二检波输入;(7)第二检波输出;接入R_(511)、C_(513)、R_(515)、R_(516)以改变电脑工作的时间常数:(8)电脑选曲信号输出;(9)～(13)接预置位发光二极管;(14)+B;(15)置数输入端;(16)电源。
Ten, the computer part of the computer mainly by two integrated circuits (IR3R20A, T2D62504P) and movement. JC_ (501) (IR3R20A) each pin functions are as follows: (1) input +; (2) negative feedback input; (3) filter; (4) the first output. The above is an operational amplifier. (505), R 501, R 505, C 508, R 504, R 506 and C 507 are used to control the amount of negative feedback to change the gain of various states . (511), C_ (513), R_ (515), R_ (516) to change the time constant of the computer work: (5) ground; (6) the second detection input; (7) the second detection output; (8) Computer selection signal output; (9) ~ (13) connected to the preset position LED; (14) + B; (15) set the number of inputs;