2)Number Systems

Binary

      >> The binary number system is very simple because it consist of only two digits, ie 0 and 1.
      >> The base or radix of binary system is 2.
      >> In the digital system, each of the binary digits is called bit and group of 4 bits and 8 bits are called a nibble and a bytes respectively.

Decimal
  
     >>The decimal number system uses the digits 0,1,2,...9. It is commonly used even though there are many other number systems.
     >>The base or radix of binary system is 10.

Octal

     >>The octal number system uses the digits 0,1,2,....7.
     >>The base or radix of octal system is 8.

Hexadecimal
   
     >>The hexadecimal number system uses the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, F. The symbols A, B, C, D, E, F represents 10,11,12,13,14,15 respectively.
    >> The base or radix of hexadecimal system is 16.

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1)Introduction

Digital Circuits

A digital circuit operates with binary numbers i.e only in two states either low (0) and high (1). In general, 0 represent zero volt and 1 represent five volts.
>>Digital circuits are small in size, less affected by noise, low power consumption.
>>The data is usually in binary states and is processed and stored electronically to prevent errors due to noise and interfering signals.
>>Digital circuits find application in computers, telephony, data processing, radar navigation, military system, medical instruments, and consumer products.
>>The general properties of number system, methods of conversion from one to another, arithmetic operation, weighting codes, non-weighted codes, error detecting codes and correcting codes are discussed in my future post.

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