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2. Calculator input methods - Wikipedia

   en.wikipedia.org/wiki/Calculator_input_methods

   [1] [2] [3] On an expression or formula calculator, one types in an expression and then presses a key, such as "=" or "Enter", to evaluate the expression. [4] [5] [6] There are various systems for typing in an expression, as described below.

3. Majority function - Wikipedia

   en.wikipedia.org/wiki/Majority_function

   The few systems that calculate the majority function on an even number of inputs are often biased towards "0" – they produce "0" when exactly half the inputs are 0 – for example, a 4-input majority gate has a 0 output only when two or more 0's appear at its inputs. [1] In a few systems, the tie can be broken randomly. [2]

4. Operation (mathematics) - Wikipedia

   en.wikipedia.org/wiki/Operation_(mathematics)

   An n-ary operation can also be viewed as an (n + 1)-ary relation that is total on its n input domains and unique on its output domain. An n-ary partial operation ω from X n to X is a partial function ω: X n → X. An n-ary partial operation can also be viewed as an (n + 1)-ary relation that is unique on its output domain.

5. Arithmetic circuit complexity - Wikipedia

   en.wikipedia.org/wiki/Arithmetic_circuit_complexity

   An input gate computes the polynomial it is labeled by. A sum gate v {\displaystyle v} computes the sum of the polynomials computed by its children (a gate u {\displaystyle u} is a child of v {\displaystyle v} if the directed edge ( v , u ) {\displaystyle (v,u)} is in the graph).

6. Adder–subtractor - Wikipedia

   en.wikipedia.org/wiki/Adder–subtractor

   By preceding each A input bit on the adder with a 2-to-1 multiplexer where: Input 0 (I 0) is A; Input 1 (I 1) is A; that has control input D that is also connected to the initial carry, then the modified adder performs addition when D = 0, or; subtraction when D = 1. This works because when D = 1 the A input to the adder is really A and the ...

7. Condition number - Wikipedia

   en.wikipedia.org/wiki/Condition_number

   [1] [2] The condition number is derived from the theory of propagation of uncertainty, and is formally defined as the value of the asymptotic worst-case relative change in output for a relative change in input. The "function" is the solution of a problem and the "arguments" are the data in the problem.

8. Three-valued logic - Wikipedia

   en.wikipedia.org/wiki/Three-valued_logic

   Boolean logic allows 2 2 = 4 unary operators; the addition of a third value in ternary logic leads to a total of 3 3 = 27 distinct operators on a single input value. (This may be made clear by considering all possible truth tables for an arbitrary unary operator.

9. Floor and ceiling functions - Wikipedia

   en.wikipedia.org/wiki/Floor_and_ceiling_functions

   In mathematics, the floor function is the function that takes as input a real number x, and gives as output the greatest integer less than or equal to x, denoted ⌊x⌋ or floor(x). Similarly, the ceiling function maps x to the least integer greater than or equal to x , denoted ⌈ x ⌉ or ceil( x ) .