The document details the history and evolution of ARM (Advanced RISC Machines), initially developed by Acorn Computers in 1985 for faster computing. ARM processors, known for their low power consumption, dominate the mobile and embedded markets, with billions shipped since 2008. Key features and applications of ARM processors, including the ARM7TDMI-S architecture, are highlighted along with their significance in various technology sectors.

1. ARM
Advanced RISC Machine

2. Are you using this ?

3. HISTORY
ARM started life as part of Acorn computer, and
now designs chips for Apple's iPad.
Developed in 1985 at Acorn Computers Ltd for
the 1st time
1978 - Acorn Computers is established in
Cambridge, and produces computers which are
particularly successful in the UK. Acorn's BBC
Micro computer was the most widely-used
computer in school in the 1980s.

4. 1985 - Acorn Computer Group develops the
world's first commercial RISC processor -
enabling a computer system which uses simpler
commands in order to operate faster.
1990 - ARM is founded as a spin-off from Acorn
and Apple, after the two companies started
collaborating on the ARM processor as part of the
development of Apple's new Newton computer
system.
2007 - About 98pc of the more than 1bn mobile
phones sold each year use at least one ARM
processor.

5. 2008 - The 10 billionth processor chip based
on ARM's designs is shipped.

6. ARM
 ARM stands for Advanced RISC Machines
 An ARM processor is basically any 16/32bit microprocessor
designed and licensed by ARM Ltd, a microprocessor design
company headquartered in England, founded in 1990 by Herman
Hauser
 A characteristic feature of ARM processors is their low electric
power consumption, which makes them particularly suitable for
use in portable devices.
 It is one of the most used processors currently on the market

7. ARM Partnership Model

8. Why ARM?
 The ARM is a 32-bit reduced instruction set
computer (RISC).
 It was known as the Advanced RISC Machine, and
before that as the Acorn RISC Machine
 ARM processors made them suitable for low
power applications.
 This has made them dominant in the mobile and
embedded electronics market as relatively low
cost.

9. ARM7TDMI –S stands for:
ARM - Advanced RISC Machines
 7 - Version number of the architecture
 T - THUMB: 32-bit wide instruction words 16-bit wide
memory
 D - Debug: 2 break points to stop the CPU (both
hardware and software)
 M - Multiplier: enhanced (relative to earlier ARM cores)
32x8 Multiplier.
9

10.  I: Interface: Embedded ICE macro cell. JTAG- Joint
Test Action Group.
 -S: synthesizable (ie., distributed as RTL rather than
a hardened layout)

11. Applications
• Industrial control
• Medical systems
• Access control
• Point-of-sale
• Communication gateway
• Embedded soft modem
• General purpose applications

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