Why Nvidia earnings are so important?

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Nvidia Corporation (NASDAQ: NVDA) Delayed: 212.06 +4.77 (2.30%)
Previous Close $207.29    52 Week High $88.77 
Open $205.80    52 Week Low $24.75 
Day High $214.39    P/E 286.57 
Day Low $204.95    EPS $0.74 
Volume 137,743,829       

Novadel Pharma, Inc. (NASDAQ: NVDL) Delayed: 33.09 +1.47 (4.65%)
Previous Close $31.62    52 Week High $0.03 
Open $31.23    52 Week Low $0.00 
Day High $33.83    P/E N/A 
Day Low $30.95    EPS $-0.05 
Volume 16,227,821       

Nevada Stock Exchange, Inc. (NASDAQ: NVDS) Delayed: 20.58 -0.79 (3.7%)
Previous Close $21.37    52 Week High $0.22 
Open $21.56    52 Week Low $0.00 
Day High $21.56    P/E N/A 
Day Low $20.27    EPS $0.00 
Volume 241,341