The 80286 introduced "Protected Mode" in 1982. It was not popular. The mode was difficult to use, lacked paging, and offered no way to return to real mode without a hardware reset. The 80386, arriving three years later, made protection usable -- adding paging, a flat 32-bit address space, per-page User/Supervisor control, and Virtual 8086 mode so that DOS programs could run inside a protected multitasking system. These features made possible Windows 3.0, OS/2, and early Linux.
08:03, 28 февраля 2026Спорт
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第二十三条 一般纳税人购进货物（不含固定资产）、服务，用于简易计税方法计税项目、免征增值税项目和不得抵扣非应税交易而无法划分不得抵扣的进项税额的，应当按照销售额或者收入占比逐期计算当期不得抵扣的进项税额，并于次年1月的纳税申报期内进行全年汇总清算。
Фото: Наталья Селиверстова / РИА Новости
The only catch was this had a planned six-month mission, extending the astronauts stay until now.