FUENTES BIBLIOGRÁFICAS
https://www.carrod.mx/products/ci-ttl-sumador-de-4-bits-74ls283
http://hflorezf-es.blogspot.com/2011/09/restador-de-4-bits.html
https://www.inventable.eu/2012/10/17/temporizador-muy-simple/
https://www.areatecnologia.com/electronica/circuito-integrado-555.html
http://r-luis.xbot.es/icdatos/4013.html
https://en.wikibooks.org/wiki/Practical_Electronics/IC/4013
https://www.researchgate.net/figure/Pin-diagram-of-4013_fig5_224910030
https://www.ecured.cu/Circuito_integrado_7408
http://www.aprendizdetecnologo.com/index.php/practicas/electronica/13-iniciacion-a-puertas-logicas-y-circuitos-integrados-el-7404-el-7408-y-el-7432