diff --git a/hardware/keyboard-sol-integrated/README.md b/hardware/keyboard-sol-integrated/README.md
index 8777e1a..ecaec02 100644
--- a/hardware/keyboard-sol-integrated/README.md
+++ b/hardware/keyboard-sol-integrated/README.md
@@ -3,7 +3,7 @@
 This keyboard with integrated encoder replicates the keyboard on the SOL-20.
 
 This keyboard has a sibling Sol-20 keyboard without integrated
-encoder [(here)](../keyboard-sol). The two keyboards are identical except for the following difference:
+encoder [(here)](../keyboard-sol). The two keyboards are identical except for the following differences:
 
 1. This integrated version places the connector closer to the main board keyboard
    socket, so the original cable fits more easily.
@@ -13,7 +13,7 @@ encoder [(here)](../keyboard-sol). The two keyboards are identical except for th
    side of the keyboard, and connected with a cable, to avoid mechanical
    interference from the Sol main board.
    
-1. The piggy-back encoder permits use with other machines, via the Apple-1 and
+1. The piggy-back encoder is more flexible for use with other machines, via the Apple-1 and
    Apple-2 sockets, and two different user-configurable headers.
    
 1. The piggy-back encoder also includes a UART interface.
diff --git a/hardware/keyboard-sol/README.md b/hardware/keyboard-sol/README.md
index 469907a..cd61800 100644
--- a/hardware/keyboard-sol/README.md
+++ b/hardware/keyboard-sol/README.md
@@ -6,7 +6,7 @@ This keyboad matrix works with one of the add-on ASCII encoders from this
 project, which must be separately built or acquired.
 
 This keyboard has a sibling Sol-20 keyboard with integrated
-encoder [(here)](../keyboard-sol-integrated). The two keyboards are identical except for the following difference:
+encoder [(here)](../keyboard-sol-integrated). The two keyboards are identical except for the following differences:
 
 1. The integrated version places the connector closer to the main board keyboard
    socket, so the original cable fits more easily.
@@ -16,8 +16,8 @@ encoder [(here)](../keyboard-sol-integrated). The two keyboards are identical ex
    side of the keyboard, and connected with a cable, to avoid mechanical
    interference from the Sol main board.
    
-1. The piggy-back encoder permits use with other machines, via the Apple-1 and
-   Apple-2 sockets, and two different user-configurable headers.
+1. The piggy-back encoder is more flexible for use with other machines, via the
+   Apple-1 and Apple-2 sockets, and two different user-configurable headers.
    
 1. The piggy-back encoder also includes a UART interface.