Figure 8.24. There are three rectangles representing integrated circuits and a 7 segment numeric display in this diagram. The first IC is a 7490. The input to this IC comes from an external connection labeled, quote, input from next least significant digit, end quote. There is another input to the 7490 labeled quote, reset, end quote. There are 4 outputs from the 7490 labeled eh, B, C, and D. These 4 outputs go through separate wires to the eh, B, C, and D, inputs of a 7475 IC. The D output from the 7490 also goes to an external connection labeled, quote, output to next most significant digit, end quote. The 7475 has another input labeled, quote, strobe, end quote. The 7475 has 4 outputs labeled eh, B, C, and D, which connect to the eh, B, C, and D, inputs of a 7447 IC. The 7447 has 7 outputs which are not labeled in this diagram. Each output goes through its own resistor to the segment inputs of a 7 segment display. End verbal description.
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