ENIAC-on-a-Chip

<It uses about 175,000 transistors! Wow, what an increase, just think of a <computer with 175,000 triodes, and compare that to an ENIAC (much less, <the power required). Or some years later, one with 175,000 discrete <transistors. Now that I remember, this was a thread some months ago... top <speed, etc. <-Dave Your babbeling. The original use some 15000 tubes of single and dual types. The interconnecting logic used many diodes. What is missed is the in many of the tube (early transistor too) machines pulse transformers, diodes and capacitors were used to interconnect logic elements. To perform the same logical function of a tube FF on a CMOS FPGA/FPLA you will not less than 6-10 transistors due mostly to differeing interconnect schemes and tube logic have load resistors where cmos having a complmentary transistor. The difference showing in the power used (15KW VS ~1-2W). The key is they are implementing archetecture not direct circutry. Allison