olemus
tõrke põhjus tarkvaras või riistvaras

ISO/IEC 15026:
defect in a system or a representation of a system that if executed/activated could potentially result in an error

ISO/IEC/IEEE 24765:
defect in a hardware device or component

ülevaateid
https://en.wikipedia.org/wiki/Hardware_bug

https://en.wikipedia.org/wiki/Bug_(engineering)

vt ka
- defekt (1)
- defekt (2)
- programmiviga, puuk