今天我们要建造每一台计算机的心脏—中央处理器。CPU的工作是执行我们熟悉和喜爱的程序，比如你知道的像GTAV，Slack等等，为了制作我们的CPU，我们将引入前两集制作的ALU和RAM，然后逐步完成一些时钟周期。警告：这可能是本系列中最复杂的一集，我们自己看了几遍，不要担心.03Hz，我们认为你（的运算速度）可以跟得上。

Today we’re going to build the ticking heart of every computer - the Central Processing Unit or CPU. The CPU’s job is to execute the programs we know and love - you know like GTA V, Slack... and Power Point. To make our CPU we’ll bring in our ALU and RAM we made in the previous two episodes and then with the help of Carrie Anne’s wonderful dictation (slowly) step through some clock cycles. WARNING: this is probably the most complicated episode in this series, we watched this a few times over ourselves, but don't worry at about .03Hz we think you can keep up.