1. By Nate Durrett

3. In the year 1954, I.D.E.A (Industrial Development
Engineering Associates) introduced the first
portable transistor radio, The Regency TR-1.

4. The TR-1 had a simple design yet was very
expensive. Its price was $49.95, which would
translate to around $325 in today’s
standards.

5. Its battery life was also very short, taking 22.5
volt batteries, which were also quite
expensive.

6. Next came the Norelco Carry-Corder 150, the
first portable cassette player.
This device weighed 3 pounds and could play
8-track tapes as well as cassettes.

7. After the Carry-Corder came Sony Walkman
TPS-L2.

8.  Consumers were amazed by it’s size as it was
only a bit bigger than the cassette it played, as
it was pocket sized and came with light weight
headphones, which were new at the time.

9. The Walkman continued to be the most
popular until CD’s started to catch the
public’s eyes.
Sony saw this and decided to reinvent their
product.
Thus the Sony Discman D-50 was born.

10. 1948, the Discman D-50 was created and again
was an immediate hit among buyers.
This was the first Compact Disc player, also a
bit larger then the CD it played.

11.  Last
but not least came Apple’s iPod, which
wasn’t that different from other mp3’s,
except for its sleek design and simple wheel.

12.  1954 - Regency TR-1
 1962 - KLH Model 11 Portable
 1965 - Philips Compact Cassette & the
Norelco Carry Corder 150
 1979 – Sony Walkman TPS-L2
 1984 – Sony Discman D-50
 1998 - Eiger Labs MPMan F10

13.  Technabob.com
 Wikipedia.org