Patent ID: 7698423

Claim:
A computer system comprising: a plurality of first computers each operated by an operator and having a processor, a memory and an interface; and a second computer coupled via a network to the plurality of first computers and having a processor, a memory and an interface, wherein each of the plurality of first computers is configured to: execute at least one software; obtain operation information by the operator with respect to the at least one software to be executed; receive an input of information from the operator; display a confirm window for the operator to check whether the received input information is correct or not; calculate operation time period about the displayed confirm window based on the obtained operation information; and send the calculated operation time period about the confirm window to the second computer, and wherein the second computer is configured to: receive the operation time period about the confirm window; and calculate the number of operations of which the received operation time period about the confirm window is shorter than a first threshold value.