1 Trisomy 13 is a rare condition caused by an extra copy of chromosome 13. 2  Babies with trisomy 13 have many abnormalities, involving nearly every organ system in the body, as well as developmental delay. 3  It is difficult to predict the life expectancy of a baby with trisomy 13.
Freebase(0.00 / 0 votes)Rate this definition: Comparator. In electronics, a comparator is a device that compares two voltages or currents and switches its output to indicate which is larger. They are commonly used in devices such as analog-to-digital converters.
When there is a need for a comparator circuit, it is always best to opt for a specific comparator chip as the basis of the circuit. Comparator chips are much better at handling switching between two values and may often have output stages that can more easily interface with logic than analogue operational amplifiers.omparator circuits find a number of applications in electronics. Effectively a comparator compares two voltages and switches its output accordingly. Comparators are used in many areas of electronics where levels need to be detected and in many cases op-amps used as comparators can be seen in many circuits.