- How flip-flops are implemented in the Intel 8086 processor (righto.com)
A key concept for a processor is the management of “state”, information that persists over time. Much of a computer is built from logic gates, such as NAND or NOR gates, but logic gates have no notion of time. Processors also need a way to hold values, along with a mechanism to move from step to step in a controlled fashion. This is the role of “sequential logic”, where the output depends on what happened before. Sequential logic usually operates off a clock signal,1 a sequence of regular pulses that controls the timing of the computer. (If you have a 3.2 GHz processor, for instance, that number is the clock frequency.)
- Somali Civil War (Wikipedia)
The Somali Civil War (Somali: Dagaalkii Sokeeye ee Soomaaliya; Arabic: الحرب الأهلية الصومالية al-ḥarb al-’ahliyya aṣ-ṣūmāliyya) is an ongoing civil war that is taking place in Somalia. It grew out of resistance to the military junta which was led by Siad Barre during the 1980s. From 1988 to 1990, the Somali Armed Forces began engaging in combat against various armed rebel groups, including the Somali Salvation Democratic Front in the northeast, the Somali National Movement in the northwest, and the United Somali Congress in the south. The clan-based armed opposition groups overthrew the Barre government in 1991.