exascale(exa + scale) : 10^18 assumption : 1. 추정, 상정 coherency : 일관성 primitive : 초기의, 원시적 단계의 carry out : 수행하다 residue : 1. 잔여물, 2. 잔여 유산 mnemonic : 연상 기호 procedural langauge - "sequence of specific instruction" 1. Syntax vs Semantic Syntax : "what are legal expression" ex) "cat", "dog" - o / "doggg" - x Semantic : "what programs are meaningful", "what does the program", using try-catch in seman..