Abstract: When a power button is pressed, an embedded controller (EC) first starts an operating system which is function limited but short in starting time on a first system having a CPU. After that, upon receiving a request to use multifunctional software, the EC starts an operating system which is multifunctional but long in starting time on a second system having a CPU, thus switching between the operating systems to allow selective use thereof.

Abstract: A statement is embedded in a description of a circuit for design in hardware description language stored in a function description storage section, the above statement outputting messages that test items have been tested according to a procedure stored in a package storage section. A function simulation executing section executes simulations to store the above messages in a message storage section. A report output section determines every test whether all the test items have been tested or not, based on messages stored in a message storage section, and data denoting a correspondence relationship between test vector names stored in a test data storage section and test items which are tested according to the above messages and outputs report of the determination results.