Problem in understanding the code

Question

this particular code is given as stadard example in sap unicode conversion
this particular code is replcement for 'translate code page syntax'
this code describes  how to use particular cl_abap_conv_in_ce classs
i cannot understand the   'buffer'  field in this code
can any one tell me what is the meaning of buffer = '41424320' from where did he get this value?
  DATA:
    text(100) TYPE c,
    int TYPE i,
    buffer(4) TYPE x,
    conv TYPE REF TO cl_abap_conv_in_ce.
  conv = cl_abap_conv_in_ce=>create(
          encoding = 'UTF-8'
          endian = 'L' ).
  buffer = '41424320'.
  conv->convert(
    EXPORTING input = buffer
    IMPORTING data = text ).
  buffer = '02010000'.
  conv->convert(
    EXPORTING input = buffer
    IMPORTING data = int ).

Answer 1

thank you mahmet i also want to check weather  i am doing the  code correct or not
i have old syntax in my program like    'TRANSLATE header-id FROM CODE PAGE file_tab-codepage'.
i am replacing the above syntax with the follwing code and can u correct me if  i am wrong
data:
buffer1 type xstring,
conv type ref to cl_abap_conv_in_ce,
int type i.
conv = cl_abap_conv_in_ce=>create(
          encoding = 'file_tab-codepage'
          endian = 'L' ).
  buffer1 = '41424320'.
  conv->convert(
    exporting input = buffer1
    importing data = header-id ).