Memory And Storage Device

Perangkat penyimpanan merupakan perangkat yang digunakan untuk menyimpan data dalam computer.  Berdasarkan letaknya, memori dapat dibedakan menjadi dua, yaitu :

1. Internal memory (memori yang terletak di dalam)

Internal memory adalah memori yang letaknya berada di perangkat  motherboard. Data yang akan diproses serta hasilnya akan disimpan di dalam memori ini. Contoh dari internal memory adalah RAM dan ROM.

RAM (Random Access Memory) mempunyai tugas untuk menyimpan program dan data dari pengguna computer. RAM bersifat volatile yang berarti hanya menyimpan secara sementara. Apabila listrik dimatikan, maka data-data dan program-program akan hilang (tidak tersimpan). Kapasitas memori pada RAM biasanya jauh lebih besar dibandingkan ROM.Kapasitas RAM saat ini yang berkembang adalah 16 MB,32 MB,64 MB,128 MB , 256 MB ,512 MB ,1 GB ,dan seterusnya.

Contoh RAM

ROM (Read Only Memory) ROM memiliki tugas untuk menyimpan program yang sifatnya tetap atau permanent, tidak bergantung pada keberadaan arus listrik (Nonvolatile), dan program yang tersimpan dalam ROM mempunyai sifat hanya bisa di baca oleh para pengguna komputer. Isi data pada ROM misalnya adalah program Basic Input Outout System (BIOS),yang berfungsi untuk mengendalikan perpindahan data antara mikroprosesor ke komponen lain yang meliputi keyboard,monitor,printer dan lainnya.

2. External memory (memori yang letaknya di luar)

Memori eksternal adalah memori yang tidak berhubungan langsung dengan motherboard, bahkan ada yang yang diluar casing (box)CPU.External memori selain memiliki sifat penyimpanan yang permanent (nonvo latile) biasanya juga memiliki kapasitas penyimpanan yang sangat besar.Yang termasuk dalam kategori external memori adalah floppy disk , hard disk , optical disk , CD ROM ,flash memory ,tape drive,zip disk ,dan lain – lain.

Hard disk

Tape drive

Flash disk

CD ROM

Itu beberapa contoh gambar dari eksternal memori.

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