HP 2640
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The HP 2640A and other HP 264X models were block-mode "smart" and intelligent ASCII standard serial terminals produced by Hewlett-Packard using the Intel 8008 and 8080 microprocessors.
HP 2640A terminal
HP9866A thermal printer next to a HP2645 terminal
HP 2647A terminal
HP 2621A and HP 2647A
Soft key
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A soft key is a button flexibly programmable to invoke any of a number of functions rather than being associated with a single fixed function or a fixed set of functions. A softkey often takes the for
HP 2640
…the top row, and provided for screen labels close to their respective keys. Terminal configuration in the 262X series was done entirely through the screen-labeled function keys rather than dedicated keys and through escape sequences sent from the host computer. The on-screen labeling of the eight function keys, pioneered by…
Screen-labeled function keys on a VoIP phone, allowing 'Redial', 'New Call', and 'CFwdALL'.
ATM in Mercer Island, Washington with function keys