Học sinh 12 tuổi chế tạo máy in chữ nổi từ Lego
Shubham Banerjee, một học sinh lớp 7 tại California, Mỹ đã khiến cả thế giới ngỡ ngàng khi in sáng tạo ra một chiếc máy in chữ nổi braille dành cho người mù với giá chỉ bằng 1/5 giá của một chiếc máy in chữ nổi thông thường.
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