speculatrix

speculatrix t1_ja2y85t wrote

Yes, I know. I lived through that.

At one time I was writing assembler for four bit microcontrollers.

My first computer had 4K of RAM, and 8K of ROM and cassette tape storage.

My smart watch has millions of times more flash/rom.

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speculatrix t1_ja2xp3z wrote

Unix and other real operating systems existed at the time.

DOS was basically just a fancy bootloader, a thin layer above the bios, with very basic filing system (early versions of DOS/FAT didn't even support directories!)

No processes or threads, no memory management, no separation of OS vs user space, almost no device drivers, no semaphores or locking, no network, no logging.

Just a single character based console.

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speculatrix t1_ja2rhuw wrote

DOS was barely an operating system, in the true sense.

If you look at the windows kernel and the core system libraries and tools, they provide key features such as device drivers, process separation, memory management, storage and file systems. The device drivers allow different devices from different manufacturers to be controlled in a common way at the application layer. So to some extent it doesn't matter which sound card you have. Obviously, some have more features, but the base level of functionality is the same: make stereo sound.

DOS didn't do much of that, except the filing system, keyboard and character console. Each application had to have its own drivers for sound, hi-res graphics and even a mouse! Some hardware became a standard due to popularity, and were supported by many applications.

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speculatrix t1_j75ni1f wrote

Yes, only the central part of your retina, called the fovea, has the best high quality vision for colour and resolution, that's part of the macula. This relies on light sensitive cells called cones.

The outer retina uses cells called rods which are more sensitive to light with a faster response time, and are better for night, but only offer monochrome vision. This is thought to be a survival trait, to see the movement of predators at night in your peripheral vision.

So, that full colour vision you have? Your brain is faking it.

https://www.kenhub.com/en/library/anatomy/photoreceptors

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