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Read characters from the keyboard using DOS interrupts to poll the keyboard.<br />
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Convert scan codes into ascii with a lookup table. &nbsp;Create a table such that lookup_table[scan_code] = ascii value.<br />
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If you are echoing text to the screen in a text mode, there are DOS interrupts which will put a character to the screen. &nbsp;If you are in GFX mode, then you will need to to a blt (block transfer) to copy the bitmap of the appropriate character to the screen. &nbsp;Again, you can use a lookup table to go from an ascii character to the offset in your font bitmap where the character begins.<br />
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Does this help at all? &nbsp;Do you need any more details?
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Read characters from the keyboard using DOS interrupts to poll the keyboard.

Convert scan codes into ascii with a lookup table.  Create a table such that lookup_table[scan_code] = ascii value.

If you are echoing text to the screen in a text mode, there are DOS interrupts which will put a character to the screen.  If you are in GFX mode, then you will need to to a blt (block transfer) to copy the bitmap of the appropriate character to the screen.  Again, you can use a lookup table to go from an ascii character to the offset in your font bitmap where the character begins.

Does this help at all?  Do you need any more details?

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Does anybody know how to read characters from a keyboard and echoes them on the screen using nasm assembler? The thing is I have a set of font bitmaps which I have to use to echo whatever character the user enters on the screen but I have no clue how to do that.<br />
Please somebody help me out!And how can I get the ascii value of the character from the scan code &nbsp;of the key?<br />
Thank you
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Does anybody know how to read characters from a keyboard and echoes them on the screen using nasm assembler? The thing is I have a set of font bitmaps which I have to use to echo whatever character the user enters on the screen but I have no clue how to do that.
Please somebody help me out!And how can I get the ascii value of the character from the scan code  of the key?
Thank you

Echoing characters using font bitmaps in nasm

A font is a particular size, weight and style of a typeface. Each font is a matched set of type, one piece (called a "sort") for each glyph, and a typeface consists of a range of fonts that share an overall design. With the advent of digital typography, font is frequently synonymous with typeface, although the two terms do not necessarily mean the same thing. In particular, the use of "vector" or "outline" fonts means that different sizes of a typeface can be dynamically generated from one design. Each style may still be in a separate "font file" -- for instance, the typeface "Futura" may include the fonts "Futura roman", "Futura italic", "Futura bold" and "Futura extended" —- but the term "font" might be applied either to one of these alone or to the whole typeface.

Fonts Typography

An assembly language (or assembler language) is a low-level programming language for a computer or other programmable device in which there is a very strong (generally one-to-one) correspondence between the language and the architecture's machine code instructions. Each assembly language is specific to a particular computer architecture, in contrast to most high-level programming languages, which are generally portable across multiple architectures, but require interpreting or compiling. Assembly language is converted into executable machine code by a utility program referred to as an assembler; the conversion process is referred to as assembly, or assembling the code.