40
8-pin 555 timer IC
What enable1&enable2 in pin l293d
IC pins are numbered anti-clockwise around the IC starting near the notch or dot.
The Intel 8255 is a general purpose programmable Input/Output device which is designed for use with all Intel and most other microprocessors. It provides 24 Input/Output pins which may be individually programmed in 2 groups of 12 and used in 3 major modes of operation. In MODE 0, each group of 12 I/O pins may be programmed in sets of 4 and 8 to be inputs or outputs. In MODE 1, each group may be programmed to have 8 lines of input or output. 3 of the remaining 4 pins are used for handshaking and interrupt control signals. MODE 2 is a strobed bi-directional bus configuration. The 8255 is a 40 pin integrated circuit (IC), designed to perform a variety of interface functions in a computer environment. The 8255 wasn't originally designed to be connected to the Z80. It was manufactured by Intel for the 8080 microprocessor.
a socket that is soldered to a printed circuit board, into which a 8 pin integrated circuit package may be plugged to connect it to the circuitry.
40 PINS
The 8085 is a 40 pin ic because Intel designed it that way.
8-pin 555 timer IC
What enable1&enable2 in pin l293d
Is it APR 9600 or ARP 9600? If it is APR 9600 sound record/replay IC, check out the link given below. It contains the pin configuration of the IC.
pin tetel
IC pins are numbered anti-clockwise around the IC starting near the notch or dot.
r2j10160
musical 3 pin IC UM66 and a popularly known Transistor BC548b
these two pins are biasing pins of ICs.
um66 is a melody generator cmos ic it is a three terminal ic pin no: 1 is set to ground, and pin 2 is Vdd pin 3 is the output melody signal this ic generally operates from 1.5 to 5 volts it is generally used in toys, bells etc................
IC 7402 is different from the other type of IC like 7404,7408,7432 and 7400 when it is connected to have an output desired... if you noticed all i mentioned ic is connected from left to the right. input pin 1 and 2, output pin 3 input pin 4 and 5, output pin 6 input pin 13 and 12, output pin 11 input pin 10 and 9, output pin 8 while in nor gate, to have the desired output it must be connected from right to left... input pin 2 and 3, output pin 1 input pin 5 and 6, output pin 4 input pin 8 and 9, output pin 10 input pin 11 and 12, output pin 13