So, you are looking for an extremely cheap notebook computer as your secondary machine that you can carry everywhere, but finding the new-generation of mini laptops as well as educational laptops bit expensive? Stop worrying as now you have an option. Go for Impulse's NPX-9000 "World's Cheapest Laptop". No doubt the 7-inch laptop is kinda good-for-nothing machine, but if your sole intention is to surf internet and do some basic computation then you can go for this laptop.

Specification:

400 MHz MIPS CPU
7" Analog Screen
128MB SDRAM
1GB Flash Memory
80 Key English Keyboard & Touch Pad
Linux Operating System
Connectors: SD Card Slot, VGA Port, USB x 3, Mini USB, Microphone and Earphone Jack
AC Adaptor and Accessories
External USB LAN or 802.11g WiFi dongle (optional)

[Product Page, Via Engadget]