A function terminal requiring an input is unwired. You cannot leave unwired functions on the diagram while you run a VI to try out different algorithms.
It is a difficult thing for our student to draw a block digram according to a principle digram,the difficulties are analysed and some good methods are also given in this article.
For example, here's the block diagram of the snapdragon 808, versus the diagram for the snapdragon 865 and here's the block diagram for Apple's A12 chip.
Each company's marketing team may decide to provide differing block diagrams to try to impress the consumers, which at times can certainly be confusing.
There is a ton of information in this block diagram, and we're planning on making an entire series to explain it all, but for now, here are the CPU's memory caches.