"complex instructions" is a correct and usable phrase in written English.
It can be used to describe directions that are very detailed and hard to understand. For example, "The assembly instructions in the manual were so complex that I had to read them multiple times to understand them."
But, wonder of wonders, if you follow the complex instructions carefully, the results are always good.
It required finding and following complex instructions on a Maxtor product support Web site.
It was inherently simple, so there were no complex instructions to ruin the interrupt latency.
For more complex instructions it hands you back to the iPhone.
For most jobs, it provides basic intellectual skills: the ability to understand relatively complex instructions, to write and speak clearly and cogently, to evaluate options critically.
Older people often have physical problems — including deterioration in sight, hearing, balance, memory and agility — that make it difficult to comprehend complex instructions or react quickly to directions.
Complex instruction method is adopted by instructing the students to develop a board game and embed technical based questions, which are related to kinetic and reactor design subject (KRD) and other two courses, as part of the integrated project.
Most workstation microprocessors employ reduced instruction set computing (RISC) architecture, as opposed to the complex instruction set computing (CISC) used in most PCs.
The language allows a clear specification of complex instruction formats.
We're also seeing the rise of multi-function system on chips, which means that we can run complex instruction sets right out of the box.
A RISC chip takes smaller steps than one with a complex instruction set, but it takes them faster.
