. . . "step input" . . "thresholding" . "step increase" . . "Heaviside step" . . "heaviside step function" . "Heaviside step function" . "Heaviside" . "Heaviside step function" . "Heaviside function" . . . "unit (or Heaviside) step function" . . "unit function" . "Binary step" . . "a function" . . "step" . "Heaviside unit step function" . . . . . . . "Heaviside_step_function#Analytic_approximations" . . "unit step" . . . "unit step function" . "Heaviside step function \u2013 Analytic approximations" . "maximum convention" . . . . "step functions" .