Traditional Chinese Practical Blood Group Genetics Demonstrator: Circuit Design, Parts List & Workshop Prototype Guide
In short: Traditional Chinese Practical Blood Group Genetics Demonstrator: Circuit Design, Parts List & Workshop Prototype Guide. This entry documents a circuit & prototype taken from Chinese practical-technology literature, written for small-scale makers and home producers. The text below is the full English translation of the original Chinese workshop notes, covering materials and quantities, the step-by-step sequence, and the practical cautions recorded in the source. Roughly 3205 words of English technical text, translated and preserved without editing. It is intended for experimental and reference use, not for regulated or commercial certification.
Blood type genetic demonstratorAs we all know, human blood types are divided into four types: A, B, AB and O, and there is a certain genetic relationship between the blood types of children and parents. Based on the rules of blood type inheritance in genetics, an "ABO" blood type genetic demonstrator was produced. When using it, just use the button to enter the blood type of the parents, and the possible blood types of the children will be immediately displayed. This machine can be used to demonstrate the genetic relationship of blood types in medical teaching, and can also be used in hospitals or families as an auxiliary means to identify blood type genetics.The circuit schematic diagram of the blood type genetic demonstrator is shown in Figure 12.In the figure, IC1 is an eight-D latch 74LS373 (only four of them are used), and its input terminals ③, ④, ⑦, and ⑧ pins are respectively connected to push button switches representing the parents' blood types. Initially, the output terminal is grounded due to the resistors R2~R5, and the output pins ②, ⑤, ⑥, and ⑨ are all low level. …
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