This document discusses the history of several computer storage devices: - Microchips were first developed in 1958 and were used in early computers like the IBM Series 360 in 1965. They are now used in many electronic devices. - RAM and cache memory are types of volatile semiconductor memory that temporarily store data to help improve computer performance. Hard disks provide permanent storage for operating systems and files. - Portable storage devices like floppy disks, CDs, DVDs, and USB drives allow transferring data between computers without being permanently installed. These removable devices complement the fixed and internal storage within a computer.

1. We'll talk a little about the history of the devices
Daniel J. Gonzales
Wilber
Angel

2. STORAGE DEVICE
• Microchip
• Memory RAM
• Cache Memory
• Hard disk
• Portable device
CD-Rom
floppy disk
USB memory
DVD

3. MICROCHIP
Characteristics
• Also know as integrated circuit
• First developed in 1958 by engineer Jack Kilby
• A microchip is a very thin pad where are thousands or
millions of interconnected electronic devices
• Your area may be 1 cm, 2 cm or less
• are used today in addition to the computers, in mobile phones, home appliances, toys with an
electronic component, etc..
• The first computer that used IBM microchips was launched in 1965, called Series 360. These
computers are considered third generation

4. RAM MEMORY
• The Random Access Memory, or RAM
• Is a semiconductor memory, which can both read and write
information
• Volatile memory, namely loses its contents when disconnected
from power.
• in the late 80's ability RAMs were around 4 MB, now you usually buy
a computer with at least 1024 MB (1 GB)
• There are currently different RAM modules, the most current
among the DDR3 1333 MHz speeds to 1666 MHz

5. CACHE MEMORY
• In computing, the CPU cache is a cache l1
• used by the central processing unit of a computer
to reduce access time to memory.
• The cache is a smaller and faster memory
• which stores copies of the data located in the main
memory that are used most frequently.
• When the processor needs to read or write to a
location in main memory, it first checks whether a
copy of the data is in the cache

6. HARD DISK
• Since in 1955 the first hard drive out to this
day, hard disk or HDD has had a great
development
• The hard drive is the component that is
responsible for storing all the data we want.
While serving as the memory RAM "support“
• Generally, the first thing is recorded on a hard
drive is the operating system that we use in
our computer
• Today we can find hard drives up to 2 TB
storage

7. PORTABLE DEVICES diskette
DVD
• a fixed part of the devices that exist as
components in a computer, and smaller
devices are removable
CD-ROM
USB Memory