In computing, machine code is the language for instructing the hardware.

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United States Secretary of Defense (Wikipedia) The United States Secretary of Defense (SecDef) is the head of the United States Department of Defense (DoD), the executive department of the U.S. Armed Forces, and is a high-ranking member of the federal cabinet. The SecDef’s position of command and authority over the military is second only to that of the president of the United States, who is the commander-in-chief. This position corresponds to what is generally known as a defense minister in many other countries. The president appoints the SecDef with the advice and consent of the Senate, and is by custom a member of the Cabinet and by law a member of the National Security Council.

Machine code (Wikipedia) In computer programming, machine code is computer code consisting of machine language instructions, which are used to control a computer’s central processing unit (CPU). Although decimal computers were once common, the contemporary marketplace is dominated by binary computers; for those computers, machine code is “the binary representation of a computer program which is actually read and interpreted by the computer. A program in machine code consists of a sequence of machine instructions (possibly interspersed with data).