week 6

In the class we talked about the operating system. the professor Rubin told us that operating systems manage hardware and software resources. it acts as an intermediary between the two. there are several types of operating systems which are multi-user,single-user, multi-taksing, single-tasking, and mobile o/s.
single tasking is user intervention required to change from task to task. and cooperative multi-tasking is processes voluntarily give up CPU control to other processes from time to time. and pre-emptive multi-tasking is the OS kernel guarantees each process some operating time.

in the class, we also talked about the Linux program. professor told us that linux is the most successful open source project. more than 100 companies make money distributing, and supporting, and more than there are more than 10,000 volunteers and developers. and also there are 600 different distributions available globally. and during the lecture we also talked about the mobile market. about  43% people use android market, and about 18% use apple operating system.

Through the lecture, i learned about the operating system, and i think to spread my business and communicate with the customers, i need to use mobile market. i need to create application both android and apple market to make the customers download and to advertise my product. and also i think i am going to use Linux system to benefit my company. there are more than 100 companies make money distributing and supporting the Linux system.