🔬 Discovery

Sheffer stroke

Conjunción opuesta

Date
1913 · confidence medium
Place
Cambridge, Massachusetts, United States
Credited to
Henry M. Sheffer
Field
Knowledge & symbols

What was discovered

A binary logical operation (NAND, "not both") sufficient on its own to express any other Boolean operation, formulated by Henry M. Sheffer.

What it led to

  • NAND logic gates in digital electronics
  • Minimalist integrated circuit design
  • Logic programming languages
  • Simplification of Boolean algebra

Links

Sources✓ verified 2026-09-28