Berbagai Tipe Data dalam VB.NET

Indonesia Version by Sebastian Mandai

Visual Basic type	.NET Runtime Type	Banyak RAM	Rentang Nilai
Boolean	System.Boolean	2 bytes	True or False.
Byte	System.Byte	1 byte	0 hingga 255 (unsigned).
Char	System.Char	2 bytes	0 hingga 65535 (unsigned).
Date	System.DateTime	8 bytes	0:00:00 pada January 1, 0001 hingga 11:59:59 PM pada December 31, 9999.
Decimal	System.Decimal	16 bytes	0 hingga +/-79,228,162,514,264,337,593,543,950,335 tanpa nilai desimal; 0 hingga +/-7.9228162514264337593543950335 dengan 28 angka dibelakang desimal; nilai terkecil non-zero adalah +/-0.0000000000000000000000000001 (+/-1E-28).
Double (double-precision floating-point)	System.Double	8 bytes	-1.79769313486231570E+308 hingga -4.94065645841246544E-324 untuk nilai negatif; 4.94065645841246544E-324 hingga 1.79769313486231570E+308 untuk nilai positif.
Object	System.Object	4 bytes	Semua tipe dapat disimpan dalam variabel objek
Integer	System.Int32	4 bytes	-2,147,483,648 hingga 2,147,483,647.
Long (long integer)	System.Int64	8 bytes	-9,223,372,036,854,775,808 hingga 9,223,372,036,854,775,807.
SByte	System.Sbyte (class)	1 bytes	-128 hingga 127.
Short	System.Int16	2 bytes	-32,768 hingga 32,767.
Single (single-precision floating-point)	System.Single	4 bytes	-3.4028235E+38 hingga -1.401298E-45 untuk nilai negatif; 1.401298E-45 hingga 3.4028235E+38 nilai positif.
String (variable-length)	System.String (class)	Tergatung pada pelaksanaan platform.	0 sampai sekitar 2 milyar Unicode characters.
User-Defined Type (structure)	(inherits from System.ValueType)	Tergantung pada pelaksanaan platform.	Setiap anggota strktur mempunyai range yang ditentukan dari type datanya dan bebas dari range anggota yang lain.

Sumber : msdn.microsoft.com 

Note : Pemahaman anda tentang Tipe Data akan sangat membantu dalam menguasai VB.NET, jadi tolong pelajari dengan serius jika ingin hasil yang baik.

Pengenalan Komputer

Salam semua....

Pada postingan kali ini saya membahas atau mengulang sedikit pengetahuan tentang komputer, sebenarnya untuk pengetahuan komputer itu sendiri tidak perlu saya tulis dikarenakan sudah banyak website atau blog yang membahas tentang komputer dan disini saya berikan link wikipedia yang didalamnya lengkap tentang komputer dan anda juga dapat membacanya. Berikut link wikipedia :

KomputerWIKI

hmm...sebenarnya postingan saya kali, saya lebih ingin membahas tentang pengenalan isi dari komputer seperti komponen yang ada pada komputer contoh Motherboard, Memory, Harddisk, dll. Nah, itu dapat anda baca dengan mendownload pada link dibawah ini karena saya membuatnya di dalam MS.WORD dan isinya lumaya panjang, jadi saya hanya menyediakan link downloadnya saja.

Download

Range of Port Types by Sebastian Mandai

• Port 80, Web Server This port usually used for web servers, so when users type the IP address or hostname in the web browser then the web browser will see the IP they will be on port 80

• Port 81, Web Server : Alternative when port 80 blocked the port 81 will be used as an alternative port hosting website 
 

• Port 21, FTP Server When someone is accessing an FTP server, then by default the ftp client will connect through port 21 to ftp server

• Port 22, SSH Secure Shell This port is used for the SSH port

• The port 23, Telnet If you are running a telnet server so this port used for connection with telnet client telnet server

• Port 25, SMTP (Simple Mail Transport Protocol) When someone sends an email to your SMTP server, then the port is in use is port 25

• Alternate SMTP Server Port 2525 is the port active alternatifi from TZO for menservice email forwarding. This port is not standard ports, but can diguunakan when exposed blocks smtp port.

• Port 110, POP Server If you run a mail server, users will typically log into the machine via POP3 (Post Office Protocol) or IMAP4 (Internet Message Access Protocol) to receive their email, POP3 is a protocol for accessing mail box

• Port 119, News (NNTP) Server 
• Port 3389, Remote Desktop This port is for remote desktop on WinXP
• Port 389, an LDAP Server LDAP or Lightweight Directory Access Protocol is Becoming popular for Directory access, or Name, Telephone, Address directories. For Example LDAP: / / LDAP.Bigfoot.Com is a LDAP directory server.

• Port 143, IMAP4 Server IMAP4 or Internet Message Access Protocol is Becoming more popular and is Used to retrieve Internet Mail from a remote server. It is more disk intensive, since all messages are stored on the server, but it allows for easy online, offline and disconnected use.

• Port 443, Secure Sockets Layer (SSL) Server When you run a secure server, SSL Clients wanting to Secure server connects to your will from the connect on port

•  Port 443. This port needs to be open to run your own Secure Transaction Server. Port 445, SMB over IP, File Sharing Weaknesses windows which open these ports. This port usually used as a port, including printer sharing file sharing, the port is easily inserted inin viruses or worms and the like

• Ports 1503 and 1720 Microsoft NetMeeting and VOIP MS NetMeeting and other VOIP allows you to host an Internet call or videoconference with other 16. NetMeeting or VOIP users.

• Port 5631, PCAnywhere When a PCAnywhere server is set up to receive remote requests, it listens on TCP port 5631. This allow you to run a PCAnywhere host and use the Internet to the connect back and remotely control your PC.

• Port 5900, Virtual Network Computing (VNC) When you run the VNC server to remotely control your PC, it uses port 5900. VNC is useful if you wish to remotely control your server.

• Port 111, Portmap  
• Port 3306, Mysql  
• Port 981/TCP