The Cube of Destruction—OTP’s Nuclear Bomb Code Memory

A PCB engineer made a mistake and discovered that an LED matrix without a current-limiting resistor could actually be used to store data~~~ WDLM ~~~ discovered this stuff and sent a number of super agents to steal it from Jialichuang's factory. This super memory is used to store ~~~nuclear bomb launch codes~~~ The small magic cube actually contains the ability to destroy human beings. Is it the loss of morality or the annihilation of humanity?

—————— Okay, no more fuss, let’s introduce the principle. In the LED dot matrix, the LED lamp beads need to add a current-limiting resistor. If not, the consequence will be to burn the LED lamp beads, and the burned out LED lamp beads cannot conduct electricity. Based on this principle, I thought of the most important thing. The starting programmable memory OTP ROM fuse ROM replaces the LED with the fuse to store data. When we need to write data (can only be programmed once), let the transistor Q9, the bottom one, be turned on to limit the current. When the resistor is short-circuited, the LED matrix is ​​programmed with a writable ROM memory. At this time, normal lighting of the LED will burn the LED beads. In order to increase the current, I specially used a triode. Then we convert the data into an 8*8 dot matrix (columns represent data, rows represent addresses) and store it in. The LEDs corresponding to 0 will be burned out if the supply voltage is directly applied to both ends. The LEDs corresponding to 2 will be burned out. No, data is solidified in the LED dot matrix in this way. When reading, turn off the transistor. If you read again at this time, you can read 1 on the good LED, and read 0 on the broken LED because of the pull-down resistor. The memory made in this way will flash when reading data.

But having said that, the storage capacity of 8Bytes is 5*8=40Bytes, which can really store human nuclear bomb passwords. This thing has the ability to destroy humanity. No more talking, someone is here to deliver the express.