Originally posted on my old old old blog

Below is an ASCII art rendition of the TI-Nspire CX CAS graphing calculator.

A comparison

.-------------------------------------------------,
| |                                             | |
| |                TI-NSPIRE CX            CAS  | |
| |                                             | |
| | .-----------------------------------------, | |
| | | [^]               CAS               ([] | | |
| | |-----------------------------------------| | |
| | | /#/ Scratchpad       /#/ Documents      | | |
| | |                                         | | |
| | | [A] Calculate        [1] New Document   | | |
| | | [B] Graph            [2] My Document    | | |
| | |                      [3] Recent >       | | |
| | |                      [4] Current        | | |
| | |                      [5] Settings       | | |
| | |                                         | | |
| | |                                         | | |
| | |   .--, .--, .--, .--, .--, .--, .--,    | | |
| | |   |+=| |\/| ||\| |##| |||| |[]| |/\|    | | |
| | |   `--' `--' `--' `--' `--' `--' `--'    | | |
| | |                                         | | |
| | `-----------------------------------------' | |
| |    <-                                 off   | |
| | .-----,             >[]             .-----, | |
| | | esc |      .---------------,      | ^on | | |
| | `-----'      |       ^       |      `-----' | |
| | .-----,      |     .---,     |      .-----, | |
| | | /#/ |   [<]| <   | \ |   > |[>]   | doc | | |
| | `-----'      |     `---'     |      `-----' | |
| | .-----,      |       v       |      .-----, | |
| | | tab |      `---------------'      |menu | | |
| | `-----'             []<             `-----' | |
| |---------------------------------------------| |
| |            CAPS            sto->     clear  | |
| | .-----,   .-----,         .-----,   .-----, | |
| | |ctrl |   |shift|         | var |   | del | | |
| | `-----'   `-----'         `-----'   `-----' | |
| | .-------, .-----, .-----, .-----, .-------, | |
| | | = |trg| |  7  | |  8  | |  9  | |[]{|/_\| | |
| | `-------' `-----' `-----' `-----' `-------' | |
| | .-------, .-----, .-----, .-----, .-------, | |
| | | ^ |x2 | |  4  | |  5  | |  6  | | x | / | | |
| | `-------' `-----' `-----' `-----' `-------' | |
| | .-------, .-----, .-----, .-----, .-------, | |
| | | ex|10x| |  1  | |  2  | |  3  | | + | - | | |
| | `-------' `-----' `-----' `-----' `-------' | |
| | .-------, .-----, .-----, .-----, .-------, | |
| | | ( | ) | |  0  | |  .  | | (-) | | enter | | |
| | `-------' `-----' `-----' `-----' `-------' | |
| |                                             | |
| | [E]  [A]  [B]  [C]  [D]  [E]  [F]  [G]  [?] | |
| |                                             | |
| | [π]  [H]  [I]  [J]  [K]  [L]  [M]  [N]  [|] | |
| |                                             | |
| | [,]  [O]  [P]  [Q]  [R]  [S]  [T]  [U]  [<] | |
| |                                             | |
| |      [V]  [W]  [X]  [Y]  [Z]  [  __  ]      | |
\ |                                             | /
 \|              TEXAS INSTRUMENTS              |/
  `---------------------------------------------'