Find the words in the text that mean the following.

1. to store or keep something inside something else.

2. relating to the outside of something.

3. to remove information from a computer memory.

4. relating to something that is inside something else.

5. a digital multimedia container format most commonly used to store video and audio.

6. to come out of a device after you have pressed a particular button.

 

Now complete the sentences with the appropriate form of the words from exercise 6.

1. You can ________ a lot of information in your computer.

2. Press the stop button again to __________ the disk.

3. Do you know how to recover data from __________ hard drive?

4. Congratulations! You are part of our __________  software development team.

5 The computer crashed, and all our records were __________.

6 This software lets you easily convert video files to the __________ format.

 

Which of the following statements are true or false?

1. ROM chips are not rewritable.

2. Each chip cell traditionally stores 2 bits of data.

3. Hybrid hard drives combine a magnetic hard disk and magnetic tape into one device.

4. MP3 format is the most suitable format for storing store video and audio

files.

5. External hard drives can be more easily transported than USB flash drives.

6. BIOS can be updated if necessary.

 

Answer the following questions.

1. Where can flash memory be applied?

2. In what ways is flash memory used?

3. What may be the future of hard drives?

4. In what way can you offload photos from your digital camera to a computer?

5. Do you use flash memory cards? If yes, where? Where else can flash memory cards be used?

6.What country does the name ‘flash memory’ come from?

 

Compare the following storage devices: USB flash drives and external hard drives.

Speak about different types of flash memory (in 8-10 sentences).

Unit 7

TEXT 7A  

Logarithms

 1. Learn the following active words and word combinations.

antilogarithm –  антилогарифм

characteristic – характеристика

common logarith – десятичный логарифм

computation – вычисление

natural logarith – натуральный логарифм

to raise – возводить

base – основание

power – степень

Give the Russian equivalents for the following words and expressions from the text.

positive, extensively, logarithm, to the base, hyperbolic logarithm, integer, to tabulate, mantissa, to tabulate, decimal fraction.

Find the answers to these questions by quickly reading the text.

1 What is a logarithm?

2 What types of logarithms can you name?

Read and translate the text.

 

For a positive number n, the logarithm of n (written log n) is the power to which some number b must be raised to give n. Here b is the base of the logarithm; i.e. log _bn = x, if b^x =n.

An antilogarithm is a number whose logarithm is a given number. Logarithms obey certain laws:

(1) log (nm)=log (n)+Iog (m)

(2) log (n/m)=log (n)-log (m)

(3) log n^m = m*log n

Formerly they were used extensively in computation, in the form of tables of logarithms to the base 10. Such logarithms are called common logarithms (or Briggsian logarithms). Logarithms to the base e (2,71828...) are natural logarithms (also called Napierian or hyperbolic logarithms). By convention log _e n is often written In n, and log ₁₀ n is often written log n.

Common logarithms for computation are used in the form of an integer (the characteristic) plus a positive decimal fraction (the mantissa). For example, to find the logarithm of 657.3, the number is written in the form 6.573 x 10². The logarithm of this is log 6.573 +2*log 10, which is 2 + log 6.573, or 2.8178. Here 2 is the characteristic and 0.8178 - the mantissa. For a number such as 0.06573, say, the standard form is 6.573 x 10'². The logarithm’s then -2 + log 6.573, which is written 2.8178. In tables of common logarithms, only the mantissae are tabulated.

Find in the text English equivalents for the following Russian words and word combinations.

по общему согласию, мантисса, подчиняться правилам (законам), сводить в таблицу, возводить в степень, стандартная форма.