I'm a Japanese language arts teacher, but I have quite many computers. Not as much as my trumpets. Only 5 (Three MacOS and 2 Windows), now.
Here is my computer museum....
 
What I Had
 
NEC 98N
LC 575
PowerBook 540C

In the summer of 1990, the first computer came to my house. It was a NEC laptop 98n.  Got a 12MHz of CPU and of course no HDD.  Had 2.6MB of RAM.  Run MSDOS 3.1 or something, I forgot.  I used Ichitaro ver. 3 to type my master theses.  In those days, a computer was not so useful to type Japanese.  So, after I got a job in my school, I used a Panasonic word processor machine.

CPU V30 12MHz
RAM 2.6MB (640K + 2MB)
HDD None
6 or 7 inches LCD

May 1994, the first Apple Macintosh came.  LC 575 was it.  There were several Macintosh users in our school and Kanji talk 7.1 was much easier to use than Windows 3.1.  Especially, Aldus Page Maker was a killer application.  I used this machine very much and liked very much.  This is the beginning of my computer life, actually...

CPU 68040LC 33MHz
RAM 20MB (4+16)
HDD 320MB SCSI
14 inch Trinitron display. (640*480 thousands of colors)

October 95, Apple Power Book 540C.  This cool design laptop had a 9.5 inches TFT liquid crystal display.  It was as powerful as LC 575.

CPU 68040LC 33MHz
RAM 12MB
HDD 320MB SCSI
9.5 inch TFT LCD display (640*480 256 colors)


Parforma 6210
PowerMac 7600
Canon Inova Note 3100 CX

December 95, the first Power Mac came to my house.  Parforma 6210 was it.  It got the world weakest PowerPC in it.  PowerPC 603/75MHz was it. I put full color video card in it.

CPU PowerPC 603 75MHz
RAM 32MB(16*2)
HDD 800MB IDE
9.5 inch TFT LCD display (640*480 256 colors)
Apple 15 inch shadow mask display (832*624 thousands of colors)
PicPon video card installed

January '97. Second Power Mac was Power Mac 7600/132.  I put 256MB of RAM on it.  Second, I changed CPU to Power PC 604e180MHz.  Third, I put another 4.3G HDD.  Fourth, I changed CPU to G3 225MHz and clock up to 315MHz.

CPU Power PC 604/132MHz > Power PC 604e/180MHz > Powerlogix Power Force G3 225MHz (run at 315MHz)
RAM 272MB (8*2 + 64*4)
HDD 1.3G & 4.3G SCSI
Sony 17 inch Trinitron display.
ATI video card installed.

July '97. I bought Canon Windows 95 Laptop. because, school decided to buy Windows computers for school network system... The name was Inova note 3500, I guess... Mainly, used for a very expensive mouse pad for UMAX...

CPU Pentium 133MHz
RAM 80MB (16 + 64)
HDD 1.3G IDE
12.1 inch TFT LCD display


PowerBook G3 Wall Street
PowerBook G3 Lombard
iMac DV Special Edition

April 99. PowerBook G3/266 came.

CPU PowerPC G3 266MHz
RAM 192MB (64 + 128)
HDD 4G IDE
TFT LCD 14.1 inch

With ADB & SCSI

April 2000. Another PowerBook G3 came. It was '99 model with 400MHz of G3 possessor.

CPU PowerPC G3 266MHz
RAM 192MB (64 + 128)
HDD 4G IDE
TFT LCD 14.1 inch

With USB & SCSI

April 2000. iMac DV special edition came.

CPU PowerPC G3 400MHz
RAM 256MB (128 + 128)
HDD 13G IDE
15 inch display

   
 
What I Have
 
Apus 2000/160
Sony VAIO PCV-510L3
iMac Summer 2001

April '97. A Mac clone, UMAX Apus 2000, I bought this for my office.  It was cheaper compared to Apple machine.  It is still in my house. First, came with PowerPC 603e/160MHz, 1.3G of HDD and 16MB of RAM.
-MacOS 9.0.4

CPU PowerPC 603e 160 > Newertech G3 220MHz
RAM 144MB (16 + 64*2)
HDD 3.2G IDE
Sony 19 inch Trinitron display
ATI video card installed

December '98. Sony VAIO PCV-510L3 came to do some digital video editing.
-Windows98

CPU Pentium III 333MHz > Celeron 566MHz
RAM 128MB (64 + 64)
HDD 6.4G IDE
Sony 13.3 inch TFT LCD display

August 2001. iMac 2001 late summer came.
-MacOS 9.2.2 & OS 10.1.5

CPU PowerPC G3 600MHz
RAM 384MB (256 + 128)
HDD 40G IDE
15 inch display

How come did I buy almost same model of two iMacs in a year?


Asus Barebone Kit
PowerBook G3 Pismo

Augst 2001. I made up a Windows desktop with Asustek Barebone "Terminater".
-Windows XP professional

CPU Celeron 800MHz
RAM 384MB (256 + 128)
HDD 40G + 9.4G IDE
Sony 19 inch Trinitron display

December 2001. PowerBook G3 2000 model "Pismo" came.
-MacOS 9.2.2 & OS 10.1.5

CPU PowerPC G3 400MHz
RAM 576MB (64 + 512)
HDD 10G IDE
TFT LCD 14.1 inch

With USB & Firewire