Abstract: A material inspection apparatus includes a light source, a light receiver, a light converter, and a processing unit. The light source is configured to emit light to a surface of an object to be inspected. The light receiver is configured to receive light reflected from the surface of the object. The light converter is configured to convert the light received by the light receiver into an electric current. The processing unit is configured to determine, according to the electric current, a material of the surface of the object.

Abstract: A material inspection apparatus includes a light source, a light receiver, a light converter, and a processing unit. The light source is configured to emit light to a surface of an object to be inspected. The light receiver is configured to receive light reflected from the surface of the object. The light converter is configured to convert the light received by the light receiver into an electric current. The processing unit is configured to determine, according to the electric current, a material of the surface of the object.

Abstract: The present invention provides a smart phone system, which includes a memory for storing operating systems. The memory includes: a boot zone for storing a boot load program for initialization and loading a selected bootloader into a RAM when a system hardware is powered up; bootloader zones of at least two operating systems for respectively store the bootloader of the first operating system and the second operating system; binary code zones of the at least two operating systems for respectively store binary codes of the first operating system and the second operating system. An arbitrary operating system can be selected to boot among various operating system when booting the smart phone system. Therefore, adaptability and extendibility of the smart phone can be increased without the costs of adding a hardware.