One Laptop per Child

- my presentation, with Paul Schulz, to CEGSA (Computer Education Group of South Australia)olpc-green-white.jpg
- Thursday 19th July, 2007



  • How we obtained the laptops: ' Linux.Conf.Au' - Australia's Technical Linux Conference, run by 'Linux Australia', joel stanley
  • Nicholas Negroponte (MIT Media Lab, professor, pic on right) negroponte_nicholas.jpg
  • created expressly for the world’s poorest children living in its most remote environments
  • a flexible, ultra low-cost, power-efficient, responsive, and durable machine with which nations of the emerging world can leapfrog decades of development

Core principles

  1. Child ownership, rights and responsibilities (protecting, caring, sharing)
  2. Low ages, 6-12, playing is the basis for learning
  3. Saturation, cf. vaccination, reach everyone
  4. Connection, mesh wireless, Sugar community UI
  5. Free and Open Source, provides capabilities for self development

Hardware features

  • Mesh wireless (link to video demonstrating the mesh wireless)
  • Display - indoor and outdoor modes
  • Low power consumption
  • Power generation ... move away from crank to alternatives (ripcord yoyo)
  • Touch pad and stylus combination


TamTam (music), Etoys (visual programming), Camera, others

Software Development

The software developed for the Laptop is being done with a world wide collaboration of programmers, using the free and open source software development model. This model has shown to be successful used with other projects like GNU/Linux, Wikipedia and Ubuntu, and matches the OLPC's core principles.

Development is coordinated via email, Internet Relay Chat (IRC), a wiki and distributed development software repositories.

User interface

Sugar UI - In Sugar the focus is on a community UI, rather than a desktop UI. This makes a lot of sense because the wirless mesh network is a central feature of the OLPC
.................Home view..........................
......Groups view (friends, classmates).....
..Neighbourhood view, everyone in mesh..
.......range clustered around activities


Which countries?

colour coded map

Green those countries we plan to pilot:Argentina, Brazil, Ethiopia, Libya, Nepal, Nigeria, Pakistan, Peru, Romania, Russia, Rwanda, Thailand, Uruguay & USA










2B1: The Children's Machine
concise summary of OLPC features: overview, hardware, software, features, form factor, safety and reliability

Hardware specification
detailed hardware specs

in depth view of the various features of the Sugar UI


OLPC News 2007-07-07

4. XO testing: Quanta has put an enormous effort into testing the
laptops in each of the five builds to date (A Test and B1–B4). The
approximately 7000 prototypes have undergone temperature, electrical,
mechanical, durability, and environmental testing:
Temperature: 55C/40% relative humidity (RH) operation test, 32C/50% RH
operation test, 30C/85% RH operation test, –0C operation test, 85C
storage test, –40C storage test, thermal shock and profile test (60C
to –20C);
Electrical: AC power, BIOS flashing, Open Firmware, power management,
USB 2.0, NAND flash, Wireless LAN, camera, memory, battery, LED
indicator, stress test, ESD, battery discharge, LCD module
verification, line-voltage and frequency test, power-on/off test,
altitude test, wave-form measurement, frequency response, speaker
performance, touch-pad performance, S0 state, S3 states, driver level,
frequency accuracy, oscillation allowance, negative resistance, load
capacitance, DDR1, critical trace, power-rail ramp, voltage level and
noise, USB 1.1, Radiation of EN 55022, EN 61000-4-4, skin/case
temperature, etc.;
Mechanical environmental test: operating and non-operating vibration
test, operating and non-operating shock test, package drop test,
package storage test, tilt drop test, free drop test, LCD stress test,
base pressure test, LCD-pressure vibration test, switch-protection
test, LCD-twist test, connector-tension test, adapter-cable bending
test, spill test, water test;
Durability test: hinge 65K cycles, battery 10K cycles, buttons 1M
cycles, power button 700K cycles, touch-pad buttons 3M cycles, USB
ports 10K cycles, DC in 20K cycles, DC-in, line-out, and mic-in 10K
cycles, wireless-antenna 5K cycles, SD card 16K cycles;
Special environmental test: sand and dust test, salt-fog test, solar-
radiation test, rain test;
Abusive test: free-throw test, USB and SD card reverse test, tumbling
test, water-sprinkle test, hinge max-angle test, tablet-mode max-angle
test, antenna max-force test.
These are torture tests. Most of these tests are harder—by far—than
that required for conventional laptops Currently, XO has passed the
vast majority of tests. Provisions to pass the tough ESD, salt-fog,
power-on/off test, and operating shock test are under way; as are even
higher free-drop tests, more stringent hinge-torque tests; as well as
stronger set of testing underway at UL as we enter C-Test phase in