34. 3.ក្តរបឆមែងតមវ ិធីពិហសស
4096 2048 1024 512 256 128 64 32 16 8 4 2 1
Bin Oct Dec Hex
0000 0 0 0
0001 1 1 1
0010 2 2 2
0011 3 3 3
0100 4 4 4
0101 5 5 5
0110 6 6 6
0111 7 7 7
1000 10 8 8
1001 11 9 9
1010 12 10 A
1011 13 11 B
1100 14 12 C
1101 15 13 D
1110 16 14 E
1111 17 15 F
35. IX. អតថក្បហោជន្៍ ន្ិងបហក្មើបក្មាស់ក្បព័ន្ធរបាប់
IP Address and Subnet
Mask
What is IP Address?
IP (Internet Protocol) ជាហលខ
ឆដ្លហក្បើសក្មាប់សមាា ល់ឧបររៃ៍មួយ
រន ុងក្បព័ន្ធ Network។
IPv4 ជា IP Address ឆដ្លមាន្ហសរ ី
ហលខ Binary 32 bits។
Subnet Mask បងាា ញពី the
36. IPv6 ជា IP ឆដ្លមាន្ហសរ ីហលខ Binary 128 bits។
37. Programming Languages:
Machine Language
Assembly Language
High-Level Language
C/C++ Programming
Language
Java Programming Language
Reference: Beginning Programming - A L L - I N - ONE DESK REFERENCE – FOR DUMMIES
by Wallace Wang
38. Bar-code and QR-code
This video: https://www.youtube.com/watch?v=e6aR1k-ympo&feature=youtu.be
Additional to Barcode: https://www.youtube.com/watch?v=WUsTvfnRW0c&list=PLmYE-
kkwPey4CfN5XVlMB7pBCq3pIGBVv
41. MD5 Password
MD5 means a 128-bit encryption algorithm, generating a 32-
character hexadecimal hash, whatever the captcha. This
algorithm is not reversible, ie it is normally impossible to find the
original word from the md5 hash. Our tool uses a huge
database in order to have the best chance possible to trace
the captcha. Just enter an MD5 hash in the form above to try
to decrypt!