Brief statement

Calculating devices were used from the ancient times, such as counting the stones, abacus. Then came the mechanical calculating devices based on gear wheels. The first electronic and Electromechanical devices began to appear in the middle of the 20th century. The first programmable computer was created in 1941. And the first digital computer was used during the second world war. On the first devices the data was stored on a punched tape. Then began to appear storage based on a cathode-ray tube, but it was volatile. Non-volatile storage appeared in 1932. Most of the digital data today is still stored on magnetic devices, such as hard drives, or optical media, such as CD-ROM. The database is one of the most convenient forms of data representation. Data bases are used in the sphere of sales, services, organizations for conducting any financial operations. The uniqueness of each field in the database is given a special key. The key associated with the specified field in a database. The key is it to be found and not confused with some other object.

Response to the letter

Dear Anny,

I am very glad to receive from you an invitation to the scientific conference. I work in technical support of your Internet service provider. Will be interesting to get acquainted with new people and learn new information technologies. Conference will take place not far from me. It is very comfortable. The meeting will take place this weekend. I will not ask for leave from work. It will be interesting to see the trends and directions in the modern world. I bought a black suit especially for this event. I hope to make friends with many people. I believe that I will communicate with my new friends and after the conference.

Before the meeting, Anny.

With the best regards, Aleksey.

Dialog

The client: Hello

Operator: Technical support, Alexey, Hello, I'm listening.

- Internet is not working.

- Please give your personal account number.

- 1212

- Please, tell me, who is the owner of this contract?

- Alexander V. Ershov.

- Thank you. Please, tell me what the error appears you have on your computer screen?

- Error 691.

- Thank you, this error indicates that you type the wrong username or password. Please, tell me, what username do you use?

- 1212

- Yes, thank you, properly. Please, tell me, do you remember your password?

- No, can we change it?

- Yes, of course, please, tell me passport data of the owner of the contract.

- 4978

- Thank you very much for the information provided, I can set the new password, it will be 06052013. Do you agree?

- Yes

- Well, the new password is set, please try again to connect to the Internet.

- Thank you, it worked.

- I was glad to help you. Have you any questions?

- No, thank you.

- Thank you very much for your call, good-bye.

Date: 2015-01-02; view: 995