Bahaya HP Zaman Sekarang

Di zaman sekarang ini, handphone sudah menjadi barang wajib yang harus dimiliki oleh setiap orang, bukan hanya orang dewasa, namun anak-anak pun pada zaman sekarang sudah banyak yang memiliki handphone berbagai jenis. Ironisnya, bahkan anak umur sekolah dasar sudah banyak yang memiliki handphone yang bisa dikategorikan handphone canggih semisal handphone android atau smartphone, sangat bertolak belakang ketika kita flashback 10 tahun yang lalu, dimana saat itu saya masih duduk di bangku sekolah dasar, handphone masih sangat jarang ditemukan, saat itu saya dan keluarga saya hanya memiliki satu handphone saja, itu pun handphone mahal pada zamannya, yaitu handphone 3315. Saat itu harga pulsa sangatlah mahal, zaman itu, anak-anak seumuran saya hanya bermain di lapangan maupun di depan rumah, namun pada zaman sekarang, sudah jarang ditemukan hal-hal seperti demikian. 

Hal ini merupakan salah satu akibat semakin berkembangnya teknologi informasi dan komunikasi yang telah merubah sifat dan mental anak-anak zaman sekarang. Sungguh disayangkan. Oleh karena itu, pengawasan dari orang tua dan guru di sekolah sangat diperlukan guna menjaga anak-anak agar tidak terlena dengan semakin majunya teknologi informasi dan kompunikasi. 

Penggunaan Fungsi Pada Matlab

MATLAB adalah sebuah bahasa dengan kemampuan tinggi untuk komputasi teknis. Ia menggabungkan komputasi, visualisasi, dan pemrograman dalam satu kesatuan yang mudah digunakan di mana masalah dan penyelesaiannya diekspresikan dalam notasi matematik yang sudah dikenal. Pemakaian MATLAB meliputi :

· Matematika dan komputasi

· Pengembangan algoritma

· Akuisisi data

· Pemodelan, simulasi dan prototype

· Grafik saintifik dan engineering

· Perluasan pemakaian, seperti graphical user interface (GUI).

MATLAB adalah system interaktif yang mempunyai basis data array yang tidak membutuhkan dimensi. Ini memungkinkan kita dapat menyelesaikan banyak masalah komputasi teknis, khususnya yang berkaitan dengan formulasi matrik dan vector.

Nama MATLAB merupakan singakatn dari matrix labolatory . MATLAB awalnya dibuat untuk memudahkan dalam mengakses software matriks yang telah dikembangkan oleh LINPACK dan EISPACK. Dalam perkembangannya, MATLAB mampu mengintegrasikan beberapa software matriks sebelumnya dalam satu software untuk komputasi matriks. Tidak hanya itu, MATLAB juga mampu melakukan komputasi simbolik yang biasa dilakukan oleh MAPLE.

Sistem MATLAB terdiri atas lima bagian utama :

1.      Development Environment. Ini adalah kumpulan semua alat-alat dan fasiltas untuk membantu kita dalam menggunakan fungsi dan file MATLAB. Bagian ini memuat desktop, Command window, command history, editor and debugger, dan browser untukmelihat help, workspace, files.

2.      The MATLAB Mathematical Function Library. Bagian ini adalah koleksi semua algoritma komputasi, mulai dari fungsi sederhana seperti sum, sine, cosine sampai fungsi lebih rumit seperti, invers matriks, nilai eigen, fungsi Bessel dan fast Fourier transform.

3.      The MATLAB language. Ini adalah bahasa matriks/array level tinggi dengan control flow, fungsi, struktur data, input/output, dan fitur objek programming lainnya.

4.      Graphics. MATLAB mempunyai fasilitas untuk menampilkan vector dan matriks sebagai grafik. Fasilitas ini mencakup visualisasi data dua / tiga dimensi, pemrosesan citra (image), animasi, dan grafik animasi.

5.      The MATLAB Application Program Interface (API). Paket ini memungkinkan kita menulis bahasa C dan Fortran yang berinteraksi dengan MATLAB. Ia memuat fasilitas untuk pemanggilan kode-kode dari MATLAB (dynamic linking), yang disebut MATLAB sebagai mesin penghitung, dan untuk membaca dan menulis MAT-files.

Pada artikel ini akan membahas mengenai fungsi-fungsi atau perintah-perintah dasar yang ada pada Matlab, diantaranya :

A.    Imread

B.     Imshow

C.     Size

D.    Imfinfo

E.     Imhist

A.    Imread

         Adalah suatu perintah dalam Matlab untuk membaca suatu data citra dari file atau gambar dengan menggunakan suatu perintah a=imread(‘nama file.bmp’). Imread digunakan untuk membaca image dari file qoleb.bmp yang hasilnya berupa matrik dan disimpan dalam sebuah variable a.

maka akan muncul suatu hasil seperti pada gambar berikut :

Data di atas merupakan hasil dari perintah a=imread(‘qoleb.bmp’). hasilnya dapat diketahui mengenai data citra dari sebuah file atau foto.

B.    Imshow

            Adalah suatu perintah dalam Matlab yang berfungsi untuk menampilkan suatu objek citra pada sebuah file atau foto. Perintah yang digunakan yaitu imshow(‘qoleb.bmp’) lalu tekan enter, maka akan muncul jendela baru seperti pada gambar berikut :

C.    Size

            Adalah sebuah perintah yang ada pada Matlab yang berfungsi untuk menampilkan suatu dimensi citra pada sebuah file atau foto dengan menggunakan suatu perintah size(a). menghasilkan ukuran matriks(ordo matriks), maka akan muncul hasil dimensi citra seperti pada gamabar berikut :

D.    Imfinfo

            Adalah sebuah perintah dalam Matlab yang berfungsi untuk menampilkan informasi secara lengkap mengenai sebuah citra. Imfinfo digunakan untuk memberikan informasi gambar suatu file grafik. Untuk perintah Imfinfo menggunakan imfinfo(‘qoleb.bmp’) maka akan menghasilkan suatu tampilan seperti pada gambar berikut, yaitu informasi lengkap mengenai citra, seperti ukuran, format, nama file, dan lain-lain. Kita gunakan untuk mengetahui detail informasi dari suatu file gambar. Mulai dari Nama File, Format, Size, Color Type, dan lain. Caranya cukup sederhana dengan memanfaatkan fungsi imfinfo().

E.    Imhist

            Adalah suatu perintah yang ada pada Matlab yang berfungsi untuk menampilkan suatu histogram dari sebuah citra dengan diawali menggunakan perintah p=imread(‘qoleb.bmp’) sebagai perintah deklarasi citra sebelum menampilkan histogram. Histogram adalah tampilan grafis dari tabulasi frekuensi yang digambarkan dengan grafis batangan manifestasi data benning. Tiap tampilan batang menunjukan proporsi frekuensi pada masing-masing deret karegori yang berdampingan dengan interval yang tidak tumpang tindih. Cara menjalankan langkah pertama sama seperti pada postingan sebelumnya (Cara Menampilkan File Gambar Menggunakan Matlab). Masukkan gambar (File -> Import Data) pilih gambar.

Setelah itu, gunakan perintah imhist(p) maka akan muncul tampilan histogram dari sebuah citra.

Contoh Program Sederhana Repeat

program pdhwd;
uses crt;

var pekan:integer;
    hari:integer;


begin

clrscr;
pekan:=1;
hari:=1;

  repeat hari<=1;

  begin

      until hari<=7;
      begin
      writeln('pekan ',pekan,' hari ',hari);
      hari:=hari+1;
      end;
  pekan:=pekan+1;

  end;


  readln;

end.

Daftar Isi

About Me

Blog gadgetmainstream.blogspot.com adalah blog yang berisi tentang informasi mengenai berbagai teknologi-teknologi terbaru seperti gadget, handphone, laptop, dan berbagai aksesoris-aksesoris pelengkap handphone dan laptop seperti powerbank, headset, dan masih banyak lainnya. blog ini juga menampilkan berbagai ilmu pengetahuan mengenai dunia pemrograman dalam ilmu komputer, seperti pemrograman bahasa C, bahasa PHP, dan masih banyak lainnya. 

Nama saya adalah Ahmad Asif Qolbi, saat ini (2015) masih menempuh pendidikan di bangku kuliah semester 5. mulai aktif bermain nge-blog pada saat duduk di bangku SMP kelas 2. saat itu, pertama kali diajarkan oleh kakak saya bagaimana cara nge-blog. saat itu, mulailah saya tergiur untuk terus nge-blog hingga sampai saat ini. sudah banyak blog yang dibuat namun karena faktor kesibukan di dunia nyata, beberapa blog terabaikan walau tidak semuanya. Terima kasih sudah membaca profil saya. Assalamu'alaikum. Regards.

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Program Pemanggilan Nilai dengan Pascal

program prose;
uses crt;
procedure hitung (x,y,z :byte);
begin
clrscr;
z:=x+y;
writeln('nilai x= ',x);
writeln('nilai y= ',y);
writeln('nilai z= ',z);
end;

var a,b,c :byte;
begin
a:=5;
b:=7;
c:=3;
hitung (a,b,c);
writeln;
writeln('nilai a:= ',a);
writeln('nilai b:= ',b);
writeln('nilai c:= ',c);
readln;
end.

Program Hitung Faktorial Bilangan Prima dengan Pascal

program fakbaru;
uses crt;
var i,j,n:integer;

begin
clrscr;

for i:=1 to 10 do
begin

n:=0;
//writeln('faktor ',i);
for j:=1 to i do
   if (i mod j=0) then
   begin
   //writeln (j);
   n:=n+1;
   end;
//writeln('cacah faktor =',n);
if (n=2) then writeln(i,'bilangan prima');
end;


readln;
end.

Istilah-Istilah Penting dalam Komputer

Download

                The process of carrying copies fail from remote computer to computer caller with the help of a modem or network. To copy data from a main source to a peripheral device. The term is often used to describe the process of copying a file from an online service.

Intel

                One company that introduced the pentium microprocessor maker famous in the world. The world’s largest manufacturer of computer chips Intel still dominates the market for PC microprocessor.

Mother board

                The largest component in a PC. Called the mother because the board is a place all PC components such as the processor, main memory and bush controller support series. This is where the core components of your computer reside which are listed below. Also the support cards for video, sound and networking.

Pentium

                The name for the Intel processor called P5. Based pentium processor 64-bit operation and had 3.2 milion transistors. Pentium is a brand used for a series of X86 compatible microprocessor produced by Intel. In its most current from a pentium processor is a consumer level product with a two star rating.

Processor

                Called also single-chip. Central processing unit which is a tool that translates and executes an instruction through it or a tool that serves as the brain of  the computer.

Script Luas Lingkaran dengan Pascal

program lingkaran;
uses crt;
var r:integer;
s:real;
const p=3.14;
begin

r:=7;
s:=p*(r*r);

writeln(s);
readln;

end.

Menghitung Rumus Segitiga dengan Pascal

program segitiga1;
uses crt;

var a,t:integer;
L:real;
const k=0.5;

begin
clrscr;

a:=3;
t:=3;
l:=k*(a*t);

writeln(l);
readln;


end.

Program Pekan dan Hari dengan Pascal

program pekandanhari3;
uses crt;
var pekan:integer;
    hari:integer;
    begin
    clrscr;
    writeln(' pekan','hari');
    writeln('--------------');
    readln;
    for pekan:=1 to 4 do
    begin
    for hari:=1 to 7 do
    begin
    writeln('   ',pekan,'   ',hari);
    end;
    writeln('-------------');
    readln;
    end;
    end.

Program Penghitungan Dasar dengan Pascal

program tes2;
uses crt;
var a,b:real;
    c,d,e,f:integer;
begin
clrscr;

begin
write('Bilangan pertama = ');
readln(a);
end;

begin
write('Bilangan kedua = ');
readln(b);
end;

begin
writeln('Penjumlahan = ',a+b);

writeln('Pengurangan = ',a-b);

writeln('Perkalian = ',a*b);

writeln('Pembagian = ',a/b);

readln;
end;

end.

Program Luas Daerah dengan Pascal

program luasdaerah;
uses crt;
const phi=3.14;

var jarijari,zizi,luaz,n,y:integer;

function fungsii(luas:real):real;
  begin
  fungsi:=(luaz-luas);
  end;

begin
clrscr;
  begin
  writeln ('menghitung luas lingkaran');
  write ('Masukan jari-jari = ');
  readln (jarijari);
  luas:=phi*sqr(jarijari);
  writeln;
  writeln('Luas lingkaran adalah ',round(luas),' cm2, ');
  readln;
  end;

begin
writeln ('menghitung luas persegi');
write ('Masukan sisi = ');
readln (zizi);
luaz:=zizi*zizi;
writeln;
writeln ('Luas persegi adalah ',luaz);
readln;
end;

begin
writeln ('luas daerah yang diarsir adalah = ');
readln(fungsi);
end;

begin
for n:=10 to 100 do
writeln(y);
end;

end.